Establishment and Verification of Benign and Malignant Prediction Model of Subcentimeter Pulmonary Ground Glass Nodules Based on HRCT / 中国肺癌杂志

BACKGROUND@#Pre-operative accuracy of subcentimeter ground glass nodules (SGGNs) is a difficult problem in clinical practice, but there are few clinical studies on the benign and malignant prediction model of SGGNs. The aim of this study was to help identify benign and malignant lesions of SGGNs based on the imaging features of high resolution computed tomography (HRCT) and the general clinical data of patients, and to build a risk prediction model.@*METHODS@#This study retrospectively analyzed the clinical data of 483 patients with SGGNs who underwent surgical resection and were confirmed by histology from the First Affiliated Hospital of University of Science and Technology of China from August 2020 to December 2021. The patients were divided into the training set (n=338) and the validation set (n=145) according to 7:3 random assignment. According to the postoperative histology, they were divided into adenocarcinoma group and benign lesion group. The independent risk factors and models were analyzed by univariate analysis and multivariate Logistic regression. The receiver operator characteristic (ROC) curve was constructed to evaluate the model differentiation, and the calibration curve was used to evaluate the model consistency. The clinical application value of the decision curve analysis (DCA) evaluation model was drawn, and the validation set data was substituted for external verification.@*RESULTS@#Multivariate Logistic analysis screened out patients' age, vascular sign, lobular sign, nodule volume and mean-CT value as independent risk factors for SGGNs. Based on the results of multivariate analysis, Nomogram prediction model was constructed, and the area under ROC curve was 0.836 (95%CI: 0.794-0.879). The critical value corresponding to the maximum approximate entry index was 0.483. The sensitivity was 76.6%, and the specificity was 80.1%. The positive predictive value was 86.5%, and the negative predictive value was 68.7%. The benign and malignant risk of SGGNs predicted by the calibration curve was highly consistent with the actual occurrence risk after sampling 1,000 times using Bootstrap method. DCA showed that patients showed a positive net benefit when the predictive probability of the predicted model probability was 0.2 to 0.9.@*CONCLUSIONS@#Based on preoperative medical history and preoperative HRCT examination indicators, the benign and malignant risk prediction model of SGGNs was established to have good predictive efficacy and clinical application value. The visualization of Nomogram can help to screen out high-risk groups of SGGNs, providing support for clinical decision-making.

Clinical characteristics of artificial quartz stone silicosis patients / 中国职业医学

Objectives To explore and compare the clinical characteristics and risk factors for mortality between patients with artificial quartz stone silicosis and those with classic silicosis. Methods A total of 48 patients with artificial quartz stone silicosis (experiment group) and 98 patients with classic silicosis (control group) were recruited as the research subjects using the convenience sampling method. Data of clinical symptoms, laboratory tests, high-resolution computed tomography (HRCT), and pulmonary pathology of the research subjects were retrospectively analyzed. The Cox proportional hazards regression model was used to analyze the influencing factors on the survival time of silicosis patients. Results Patients in the experiment group had shorter years of dust exposure, latency period and time since last exposure than those in the control group (all P<0.01). The positive rate of anti-nuclear antibodies and the expression of neuron-specific enolase in the experiment group were higher than those in the control group (39.6% vs 10.2%, median： 28.44 vs 16.25, both P<0.01). The PaO2 levels in the experiment group were lower than those in the control group (median： 66.0 vs 89.0, P<0.01). The patients in the experiment group had lower vital capacity, inspiratory reserve volume, forced expiratory volume in the first second (FEV1), forced vital capacity (FVC), and carbon monoxide diffusion capacity compared to the control group (all P<0.05), but the maximal expiratory flow in 75% vital capacity was higher than the control group (P<0.05). Compared with the control group, patients in the experiment group had the presence of ground-glass opacity (GGO) in both lungs, aggregation and fusion of subpleural nodules, and gradual formation of progressive massive fibrosis (PMF), with higher potential of pneumothorax. Within 5 years after diagnosis, the mortality of patients in the experiment group was higher than that in the control group (27.1% vs 4.1%, P<0.01). The Cox regression model analysis results showed that patients with nodule aggregation on lung HRCT images had a higher risk of mortality than those without nodule aggregation, and lower lung function including vital capacity, FVC, FEV1 and maximum expiratory flow in 25% vital capacity had higher risk of reduced survival time (all P<0.05). Conclusion Compared with patients with classic silicosis, patients with artificial quartz stone silicosis have higher level of serum neuron-specific enolase, increasing the risk of autoimmune diseases. Pulmonary imaging features in patients with artificial quartz stone silicosis include GGO, PMF and susceptibility to pneumothorax, and rare calcification of mediastinal lymph nodes, leading to a higher mortality rate within 5 years after diagnosis.

High-resolution Computed Tomography Findings and Serum Biomarker of Subclinical Interstitial Lung Disease in Moderate-to-severe Obstructive Sleep Apnea Patients

Background: Obstructive sleep apnea (OSA) has association with many comorbidities. Based on the postulated hypothesis from few studies, the primary objective of this study was to assess the occurrence of subclinical interstitial lung disease in moderate-to-severe OSA patients. Materials and methods: It was a prospective observational study, conducted at a tertiary care chest institute of India, 43 moderate-to-severe OSA patients diagnosed by level-I polysomnography were enrolled. All the patients underwent detailed clinical examination with high-resolution computed tomography (HRCT) chest, pulmonary function test (PFT), and serum markers MMP-1,7, SP-A, and Krebs von den Lungen-6 (KL-6). Subclinical interstitial lung disease (ILD) was identified based on the two validated measures: high-attenuation areas (HAA), defined as the percentage of imaged lung volume having computed tomography (CT) attenuation between ?600 and ?250 HU and interstitial lung abnormalities (ILA), defined as the presence of ground-glass, reticular abnormality, diffuse centrilobular nodularity, honeycombing, traction bronchiectasis, nonemphysematous cysts, or architectural distortion in at least 5% of nondependent portions of the lung in HRCT chest without respiratory symptoms with preserved lung function. Results: The mean age was 54.33 � 11.5 years with 22 (51%) males. The mean apnea?hypopnea index (AHI) was 42.38 � 27.6 with BMI >30 kg/m2 in 18 (42%) patients. The subclinical ILD was diagnosed in 12 patients. The HRCT finding of ILA was seen in 12 and high-attenuation areas (HAA) in 5 patients. The serum markers were higher in subclinical ILD compared with non-ILD OSA patients, however, only the level of MMP-7 was significantly higher in subclinical ILD patients. Conclusion: It was concluded that subclinical ILD is quite common among OSA patients with HRCT findings seen in nearly 30% of cases. This supports the hypothesis that OSA may be considered as a risk factor of subclinical ILD.

Interstitial Lung Disease in Rheumatoid Arthritis: A Prospective Study at a Tertiary Care Center

Objective: The objective of this study was to evaluate the presence of interstitial lung disease (ILD) in rheumatoid arthritis (RA) and to determine the role of clinical, spirometry, and high-resolution computed tomography (HRCT) findings to facilitate early detection of ILD in RA. Materials and methods: This is a prospective study at a tertiary care hospital from February 2016 to June 2019. All patients satisfying the American College of Rheumatology (ACR) criteria for RA and having respiratory symptoms or signs were included. All patients had detailed history, clinical examination, laboratory evaluation, spirometry, and HRCT chest. Results: A total of 280 patients of RA with respiratory symptoms were evaluated, out of which 82 (29.29%) had pulmonary involvement. There were 70 women and 12 men. Rheumatoid factor was positive in 90.2% of patients while anti-CCP antibody was positive in 43.9%. Chest X-ray (CXR) showed bilateral haziness in 36.9%. HRCT findings revealed a usual interstitial pneumonia (UIP) pattern in 73.2% patients and 24% had an nonspecific interstitial pneumonia (NSIP) pattern. Spirometric evidence of lung involvement was present in 84.2% of these cases. 2D Echo showed pulmonary hypertension (PH) in 46.3% of patients. Conclusion: Screening for respiratory symptoms and signs is essential in the clinical evaluation of RA. CXR, HCRT chest, and spirometry can be used effectively to diagnose RA-ILD early.

Prevalence, clinical profile, investigations, and visual outcome of sarcoid intermediate uveitis in a tertiary eye care center in South India

Purpose: To report the prevalence, clinical profile, investigations, and visual outcomes of sarcoid intermediate uveitis in a tertiary eye care center in South India. Methods: Retrospective, observational case series. Records of 29 patients with sarcoid intermediate uveitis were retrieved. Complete ophthalmic evaluation and systemic examination by a pulmonologist with appropriate laboratory investigations were done. Results were analyzed using SPSS software. Results: Mean age group was 42.14 ± 11.31 years. The bilateral presentation was more common and females were more affected than males. Anterior chamber cells and flares in 22.4% of cases (N = 11 eyes), posterior synechiae in 20.4% (N = 10 eyes), and both small and mutton fat keratic precipitates in 14.2% of cases (N = 7 eyes) were noted; only one eye had Busacca nodules similar to other granulomatous uveitis. Cystoid macular edemas were present in three eyes. Treatment with oral steroids and systemic immunosuppression resulted in good visual recovery. The mean presenting visual acuity in right and left eye were 0.2 and 0.3, respectively. The mean final visual acuity in right and left eye was 0.1 and 0.3, respectively. Conclusion: Sarcoid intermediate uveitis is quite common in a tuberculosis endemic country like India. A complete review of systems with appropriate investigations is essential to prevent visual complications

Unilateral Presentation of Pulmonary Alveolar Proteinosis

Pulmonary alveolar proteinosis (PAP) is a rare disorder, in which lipoproteinaceous material accumulates within the alveoli. We report a case of a 27-year-old male patient with acute worsening of breathlessness over the last 7�months and cough with desaturation up to 79% on room air. Contrast-enhanced computerized tomography of the thorax revealed unilateral diffuse crazy-paving pattern likely PAP. Transbronchial lung biopsy confirmed the diagnosis of PAP. The present case highlights the unusual presentation of PAP with unilateral involvement. To the best of our knowledge, this is the first reported case of unilateral PAP from India with a biopsy diagnosis and resolution with whole lung lavage.

Correlation of HRCT Scoring System with PFT Parameters in Interstitial Lung Disease Associated with Systemic Sclerosis Patients

Objectives. Interstitial lung disease (ILD) with features of pulmonary fibrosis and honey-combing is a significant cause of morbidity and mortality in patients with systemic sclerosis (SSc). High resolution computed tomography (HRCT) is the established non-invasive gold standard technique for the diagnosis of SSc related ILD. The present study was designed to characterise HRCT features of ILD in SSc and to correlate pulmonary function test (PFT) parameters with HRCT semi-quantitative scores. Methods. This is an observational, cross-sectional study including 36 patients of SSc who underwent HRCT chest. All the patients were females. Severity and extent were assessed using four HRCT features: ground-glass opacity (GGO), mixed GGO and reticular opacity, reticular fibrosis and honey-combing. Thirty-three patients were able to perform PFT. Total HRCT score, inflammatory index and fibrosis index were correlated with PFT parameters. Results. Interstitial lung disease was found in 33 patients (91.6%), 24 patients (66.6%) had mixed GGO along with reticular inter-lobular septal thickening. Majority of the patients (64%) had non-specific interstitial pneumonia (NSIP) pattern. Usual interstitial pneumonia (UIP) pattern was seen in 25% of the cases. One patient had overlapping features of both UIP and organising pneumonia. There was predominant lower lobe involvement. Among the 33 patients who were able to perform PFT, 85% had abnormal results (predicted forced vital capacity [FVC]<80%). Total HRCT score showed significant negative correlation with PFT parameters 枛 FVC (r=�48, P=0.004) and forced expiratory volume in one second (FEV1) (r=�28, P=0.1), respectively. The ratio of FEV1 and FVC had significant positive correlation with total HRCT score (r=0.5, P=0.002). Inflammatory index and fibrosis index had significant negative correlation with predicted FVC% (P<0.05). Conclusions. Mixed pattern (GGO and reticular opacity) was the most common HRCT finding. HRCT semi-quantitative scoring system is sensitive in assessing the severity and extent of ILD qualitatively and quantitatively in SSc patients.

The Complete and two-turn cochlear duct length among Filipinos

Objective: This study aims to measure the complete and two-turn cochlear duct lengths in a Filipino population using archived CT scan images.Methods:                Design: Retrospective Review of Records               Setting: Tertiary Government Training Hospital               Participants: CT Scan Images of 255 patientsCochlear images of patients who underwent cranial, facial, orbital, paranasal sinus and temporal bone CT scans from January 2019 to December 2019 were analyzed. Coronal oblique images from 3D multiplanar reconstructions were obtained and a single linear measurement ('A' value) was used as the spiral coefficient to calculate the complete cochlear duct length (CDL) and two-turn length (2TL).Results: A total of 510 cochlear images were obtained from the CT scan images of 255 subjects (143 males, 112 females aged 1 to 81 years; mean age = 47 years). The mean 'A' value was 8.81 mm (SD = 0.20). The mean complete cochlear duct length was 32.68 mm (31.01 mm - 35.50 mm; SD = 0.834) while the mean two-turn cochlear duct length was 29.61 mm (28.14 mm - 32.08 mm; SD = 0.732). The complete and two-turn cochlear duct lengths in males were found to be significantly longer than in females (p = .001). No significant difference was found between cochlear measurements for left and right ears.Conclusion: The mean complete cochlear duct length among Filipinos in our study measures 32.68 mm while the mean two-turn cochlear duct length measures 29.61mm. Both complete and two-turn cochlear duct lengths were longer among Filipino males than among females.

The complete and two-turn cochlear duct length among Filipinos

Objective@#This study aims to measure the complete and two-turn cochlear duct lengths in a Filipino population using archived CT scan images.

Clinical analysis of 53 children with connective tissue disease complicated with interstitial lung disease / 中华实用儿科临床杂志

Objective:To investigate the clinical manifestations, characteristics of chest high-resolution computed tomography (HRCT), and prognosis of connective tissue disease (CTD) complicated with interstitial lung disease (ILD) in children.Methods:The clinical data of 53 children with CTD-ILD who were admitted to the Department of Rheumatology and Immunology, Affiliated Xi′an Children′s Hospital of Xi′an Jiaotong University from October 2013 to October 2019 were retrospectively analyzed, including clinical manifestations, blood gas analysis, chest HRCT and prognosis.Results:As for these 53 children with CTD-ILD, the ratio of male to female was 1.0∶1.4, the average age was (7.50±3.34) years, and the course of disease was 2.00 (0.85, 7.50) months.Among them, there were 25 cases (47.2%) of juvenile idiopathic arthritis (JIA), 15 cases (28.3%) of systemic lupus erythematosus (SLE), 11 cases of polymyositis / dermatomyositis (PM/DM) (20.7%), 1 case of overlap syndrome (OS) (1.9%), and 1 case of allergic granulomatosis with polyangiitis (AGPA) (1.9%). Although cough (39.6%) was the most common symptom of respiratory system in these children with CTD-ILD and fever(66.0%) was the most common symptom in the systemic features.Blood gas analysis appeared abnormal in 17 cases, including 10 cases of hypoxemia (18.9%) and 7 cases of type Ⅰ respiratory failure (13.2%). HRCT chest showed ground glass shadow, strip shadow, subpleural spot shadow, grid shadow, pleural thickening, consolidation shadow, nodular shadow and cystic low-density shadow, with the proportion of 52.8%, 26.4%, 22.6%, 18.9%, 11.3%, 7.5%, 1.9% and 1.9%, respectively; nonspecific interstitial pneumonia (NSIP)(39.6%) was the most common type of imaging classification.After the combined treatment with glucocorticoids, immunosuppressive agents and biological agents, HRCT chest showed remarkably improvement in 36 cases (67.9%), while no change in 8 cases (15.1%). A total of 75.0%(33 cases) of 44 cases were infected in the course of combined treatment.In addition, 9 cases (17.0%) died from acute respiratory distress syndrome (ARDS), among which 4 cases exacerbated to rapid progressive luge disease and 5 cases aggravated secondary ARDS due to infection.Conclusions:Only a small number of children with CTD-ILD have respiratory symptoms and signs.HRCT chest contributes to the early diagnosis of CTD-ILD, and its imaging manifestations are diverse.Blood gas analysis and HRCT chest play an important role in the disease evaluation and treatment planning.Moreover, it is the direction for further research to develop effective methods to prevent and control secondary infection so as to improve the survival rate and reduce the mortality rate during the active treatment of primary diseases.

Pulmonary involvement in patients with juvenile systemic sclerosis / Afección pulmonar en pacientes con esclerosis sistémica juvenil

Abstract Background: Pulmonary involvement in juvenile systemic sclerosis (JSSc) is rare in children and contributes to morbimortality. This study aimed to describe the pulmonary function and clinical, radiologic, and tomographic findings in JSSc. Methods: Patients with JSSc between 5-14 years of age were included. Clinical, functional, and imaging characteristics were assessed. Patients were excluded if they showed lung disease not associated with JSSc: mixed connective tissue disease, overlap syndrome, or acute cardiopulmonary failure at the time of the study. All patients underwent physical examination, electrocardiogram, spirometry, chest X-ray, high-resolution computed tomography (HRCT) of the chest, echocardiography, lung function tests, and the 6-minute walk test (6-MWT). Descriptive statistics were employed for data analysis. Results: We studied 15 patients with the following characteristics: median age, 11 years; median since symptoms onset, 6 years; median since JSSc diagnosis and the finding of pulmonary involvement, 2 years. Lung disease was detected in 73%, interstitial lung disease (ILD) the most common affection (67%); pulmonary hypertension was found in 6.6%. 6-MWT was positive in 26.6%, forced vital capacity (FVC) was abnormal in 26.6%. No pulmonary involvement was found in four patients. Conclusions: The most frequent pulmonary affection in JSSc was ILD. Thus, early JSSc detection and periodic lung monitoring are mandatory to avoid further complications once JSSc is diagnosed.

Resumen Introducción: La afección pulmonar en la esclerosis sistémica juvenil (ESJ) es rara en niños y contribuye a la morbimortalidad. El objetivo de este estudio fue describir los hallazgos de función pulmonar, clínicos, radiológicos y tomográficos en la ESJ. Métodos: Se incluyeron pacientes con ESJ de 5-14 años de edad. Se evaluaron las características clínicas, funcionales y de imagen. No se incluyeron pacientes con enfermedades pulmonares no asociadas con ESJ en el momento del estudio: enfermedad mixta del tejido conectivo, síndrome de superposición o insuficiencia cardiopulmonar aguda. Se realizaron exploración física, electrocardiograma, espirometría, radiografía de tórax, tomografía computarizada de alta resolución de tórax, ecocardiografía, pruebas de función pulmonar y prueba de caminata de 6 minutos (PC6M). Se utilizó estadística descriptiva para el análisis de los datos. Resultados: Se estudiaron 15 pacientes con las siguientes características: mediana de edad, 11 años; mediana desde el inicio de los síntomas, 6 años; y mediana desde el diagnóstico de ESJ y hallazgo de afección pulmonar, 2 años. Se detectó enfermedad pulmonar en el 73%. La enfermedad pulmonar intersticial (EPI) fue la afección más común (67%) y se encontró hipertensión pulmonar en el 6.6%. La PC6M fue positiva en el 26.6%, y la capacidad vital forzada resultó anormal en el 26.6%. Cuatro pacientes no presentaron afección pulmonar. Conclusiones: La afección pulmonar más frecuente en la ESJ fue la EPI. La detección temprana de ESJ y la monitorización pulmonar periódica son obligatorias para evitar más complicaciones una vez diagnosticada la ESJ.

Role of High-Resolution Computed Tomography in the Evaluation of Anatomical Variations of Sphenoid Sinus and Its Clinical Importance in FESS.

Sphenoid sinus of all sinuses is generally the most inaccessible sinus to the surgeons. The trans-sphenoid route is considered to be the standard approach for surgery of pituitary adenomas. Knowing the details of the anatomy of sphenoid sinus and the extent of pneumatization can guide the surgeon through difficult corners of the approach. We wanted to evaluate the incidence of the different anatomical variations of sphenoid sinus as detected by HRCT scan and their impact on related neurovascular structures for the safe removal of inter sphenoid and pituitary lesions.METHODSThis prospective study was conducted in Sree Gokulam Medical College & Research Foundation, Trivandrum. Study population included 150 cases who were referred for HRCT of the paranasal sinuses to the Department of Radiodiagnosis, over a period of 12 months (from November 2018 to October 2019). After obtaining a written informed consent and history, all the patients underwent HRCT axial section of PNS. Once the axial sections were obtained through the paranasal sinuses, these images were reconstructed into coronal sections by multiplanar reconstruction (MPR) technique without exposing the patient.RESULTSOnodi cells were found predominantly in female patients with male:female ratio 2:7. Optic nerve protrusion and dehiscence had male predominance. Rest of the variations had no significant gender difference and few variations were seen equally distributed among both males and females. The most common variation observed in our study was pterygoid process pneumatization. Of the total 150 patients, pterygoid process pneumatization was identified in 76 patients including bilateral in 54 patients. Next common variation observed was vidian nerve protrusion, identified in 62 patients along with dehiscence of wall in 38 patients. Maxillary nerve protrusion was present in 42 patients and its dehiscence of wall in 10 patients. Optic nerve protrusion was identified in 41 patients and dehiscence of wall was noted in only 6 patients.CONCLUSIONSSphenoid sinuses are the most inaccessible paranasal sinuses and are surrounded by significant anatomical structures such as the orbit and its contents, cavernous sinus, internal carotid artery (ICA) and the anterior cranial fossa. HRCT of sphenoid sinus for the demonstration of the anatomical variations and its relation to the vital adjacent crucial anatomical structures helps in reducing the complications during trans-sphenoidal surgeries and functional endoscopic sinus surgery. Our study of HRCT findings delineates most of the anatomical variations in sphenoid sinus and thus helps the surgeons in appropriate surgical planning and helps them to reduce the intraoperative complications.

Descripción de una población de pacientes portadores de enfermedad pulmonar intersticial asistidos en el Hospital Pasteur de Montevideo, Uruguay / Description of a population of patients bearing interstitial lung disease assisted al Hospital Pasteur in Montevideo, Uruguay / Descrição de uma população de pacientes com doença pulmonar intersticial atendidos no Hospital Pasteur em Montevidéu, Uruguai

Resumen: Introducción: Las enfermedades pulmonares intersticiales son un grupo muy heterogéneo de afecciones que tienen manifestaciones clínicas, radiológicas y funcionales en común. Su epidemiología está documentada en forma parcial y su etiología es muy variada. El diagnóstico se basa en la clínica, la tomografía computada de alta resolución y, en algunos casos, la histología. Objetivos: describir la población de pacientes con diagnóstico de enfermedad pulmonar intersticial asistidos en la Policlínica de Intersticiopatías del Hospital Pasteur en el período comprendido entre el 5 de mayo de 2017 y el 17 de mayo de 2019. Materiales y métodos: Estudio descriptivo, observacional y transversal. Se utilizó un muestreo por conveniencia. Las variables analizados fueron: edad, sexo, comorbilidades, etiología, patrón tomográfico predominante, funcional respiratorio (Test de Marcha 6 Minutos y espirometría forzada con difusión de monóxido) y tratamiento instituido. Se obtuvo consentimiento informado y el trabajo fue aprobado por el Comité de Bioética del Hospital Pasteur. Resultados: 20 de los 42 pacientes asistidos eran portadores de enfermedad pulmonar intersticial. Predominó el sexo femenino (14 pacientes, 70%). La edad media fue 60 ± 16.84 años. La comorbilidad más frecuente fue el tabaquismo (13 pacientes, 65%). En 6 pacientes (30%) se identificaron exposiciones ambientales o laborales de riesgo. La etiología fue determinada en 15 pacientes (75%), siendo en 10 pacientes (50%) asociada a enfermedades autoinmunes sistémicas y en 3 pacientes (15%) neumonitis por hipersensibilidad. La mayoría (11 pacientes, 55%) tuvieron patrones tomográficos inespecíficos. 94.11% tuvieron un patrón restrictivo en el estudio funcional respiratorio, predominando la restricción moderada a severa. La difusión monóxido media fue 47.25 ± 16.71%. 11 pacientes (55%) fueron tratados con corticoides sistémicos y 2 pacientes necesitaron oxígeno a permanencia. Conclusiones: Las características demográficas, etiología, patrones tomográficos y tratamiento instituidos están influenciados por un sesgo de selección, ya que una elevada proporción de pacientes son derivados desde policlínicas de enfermedades autoinmunes sistémicas. Es fundamental un manejo integral de estos pacientes porque la asociación con otras enfermedades que pueden contribuir en la sintomatología es frecuente. Las enfermedades pulmonares intersticiales encontradas son mayormente severas y de diagnóstico tardío.

Abstract: Introduction: Interstitial lung diseases are a very heterogeneous group of conditions that have common clinical, radiological and functional manifestations. Its epidemiology is partially documented and its etiology is very varied. The diagnosis is based on the clinic, high resolution computed tomography and, in some cases, histology. Objectives: to describe the population of patients diagnosed with interstitial lung disease assisted at the Hospital Pasteur Polyclinic for Interstitiopathies in the period between May 5, 2017 and May 17, 2019. Materials and methods: Descriptive, observational and cross. Convenience sampling was used. The variables analyzed were: age, sex, comorbidities, etiology, predominant tomographic pattern, respiratory function (6-minute walk test and forced spirometry with monoxide diffusion) and instituted treatment. Informed consent was obtained and the work was approved by the Bioethics Committee of the Pasteur Hospital. Results: 20 of the 42 assisted patients were carriers of interstitial lung disease. Female sex predominated (14 patients, 70%). The mean age was 60 ± 16.84 years. The most frequent comorbidity was smoking (13 patients, 65%). Environmental or occupational risk exposures were identified in 6 patients (30%). The etiology was determined in 15 patients (75%), being associated with systemic autoimmune diseases in 10 patients (50%) and hypersensitivity pneumonitis in 3 patients (15%). Most (11 patients, 55%) had nonspecific tomographic patterns. 94.11% had a restrictive pattern in the functional respiratory study, with moderate to severe restriction prevailing. The average monoxide diffusion was 47.25 ± 16.71%. 11 patients (55%) were treated with systemic corticosteroids and 2 patients required oxygen permanently. Conclusions: The demographic characteristics, etiology, tomographic patterns and instituted treatment are influenced by a selection bias, since a high proportion of patients are derived from polyclinics for systemic autoimmune diseases. Comprehensive management of these patients is essential because the association with other diseases that may contribute to the symptoms is frequent. The interstitial lung diseases found are mostly severe and late diagnosed.

Resumo: Introdução: As doenças pulmonares intersticiais são um grupo muito heterogêneo de condições que apresentam manifestações clínicas, radiológicas e funcionais comuns. Sua epidemiologia está parcialmente documentada e sua etiologia é muito variada. O diagnóstico é baseado na clínica, na tomografia computadorizada de alta resolução e, em alguns casos, na histologia. Objetivos: descrever a população de pacientes com diagnóstico de doença pulmonar intersticial atendidos no Hospital Pasteur Polyclinic for Interstitiopathies no período de 5 de maio de 2017 a 17 de maio de 2019. Materiais e métodos: descritivos, observacionais e Cruz. Amostragem por conveniência foi utilizada. As variáveis ​​analisadas foram: idade, sexo, comorbidades, etiologia, padrão tomográfico predominante, função respiratória (teste de caminhada de 6 minutos e espirometria forçada com difusão de monóxido) e tratamento instituído. O consentimento informado foi obtido e o trabalho foi aprovado pelo Comitê de Bioética do Hospital Pasteur. Resultados: 20 dos 42 pacientes assistidos eram portadores de doença intersticial pulmonar. O sexo feminino predominou (14 pacientes, 70%). A idade média foi de 60 ± 16,84 anos. A comorbidade mais frequente foi o tabagismo (13 pacientes, 65%). As exposições a riscos ambientais ou ocupacionais foram identificadas em 6 pacientes (30%). A etiologia foi determinada em 15 pacientes (75%), sendo associada a doenças autoimunes sistêmicas em 10 pacientes (50%) e pneumonite por hipersensibilidade em 3 pacientes (15%). A maioria (11 pacientes, 55%) apresentava padrões tomográficos inespecíficos. 94,11% apresentaram padrão restritivo no estudo respiratório funcional, prevalecendo restrição moderada a grave. A difusão média de monóxido foi de 47,25 ± 16,71%. 11 pacientes (55%) foram tratados com corticosteróides sistêmicos e 2 pacientes necessitaram de oxigênio permanentemente. Conclusões: As características demográficas, etiologia, padrões tomográficos e tratamento instituído são influenciados por um viés de seleção, pois uma alta proporção de pacientes é derivada de policlínica para doenças autoimunes sistêmicas. O manejo abrangente desses pacientes é essencial, pois a associação com outras doenças que podem contribuir para os sintomas é frequente. As doenças pulmonares intersticiais encontradas são na maioria graves e diagnosticadas tardiamente.

Padrões de tomografia computadorizada de alta resolução na doença pulmonar intersticial (DPI): prevalência e prognóstico / High resolution computed tomography patterns in interstitial lung disease (ILD): prevalence and prognosis

RESUMO Objetivo Correlacionar a prevalência e o prognóstico de cada padrão de TCAR de pneumonia intersticial usual (PIU) típica, provável e indeterminada com o diagnóstico clínico multidisciplinar de doença pulmonar intersticial (DPI). Métodos Incluímos todos os pacientes com diagnóstico multidisciplinar de DPI com padrão de TCAR de PIU típica, PIU provável ou indeterminada para PIU. Dados clínicos e histopatológicos, teste de função pulmonar e status de sobrevida foram obtidos retrospectivamente. O diagnóstico final foi validado por uma equipe multidisciplinar. Resultados Foram incluídos no estudo 244 pacientes, com média de idade de 68 ± 13 anos sendo 52,5% do sexo masculino. Em um total de 106 pacientes com padrão típico de PIU, 62% tiveram o diagnóstico multidisciplinar de FPI, 20% de pneumonia por hipersensibilidade crônica (PHC) e 10% de DPI relacionada à doença do tecido conjuntivo (DPI-DTC). Dos 114 casos com provável PIU, DPI-DTC correspondeu a 39%, FPI a 31%, pneumonia intersticial descamativa a 11%, doença pulmonar relacionada a medicamentos a 9% e PHC a 8%. Nos 24 pacientes com TC indeterminada para PIU, o DPI-DTC foi o diagnóstico final em 33%, seguido por pneumonia intersticial descamativa (21%) e FPI (13%). Pacientes com PIU típica apresentaram maior probabilidade de morrer ou realizar transplante de pulmão no seguimento (17,9% e 11,3%, respectivamente). Conclusões FPI, PHC e DPI-DTC foram os principais diagnósticos diferenciais em pacientes com padrão de TCAR de PIU típica, provável e indeterminada. Pacientes com padrão de PIU típico na TCAR tiveram maior probabilidade de morrer ou realizar transplante de pulmão no seguimento.

ABSTRACT Objective To correlate the prevalence and prognosis of each HRCT pattern of typical, probable, and indeterminate usual interstitial pneumonia (UIP) with the clinical multidisciplinary diagnosis of interstitial lung disease (ILD). Methods We included all patients with a multidisciplinary diagnosis of ILD with an HRCT pattern of typical UIP, probable UIP, or indeterminate for UIP. Clinical and histopathological data, pulmonary function tests, and survival status were retrospectively obtained. The final diagnosis was validated by a multidisciplinary team. Results A total of 244 patients were included in the study, with a mean age of 68 ±13 years and being 52.5% males. In a total of 106 patients with typical UIP pattern, 62% had the multidisciplinary diagnosis of IPF, 20% had chronic hypersensitivity pneumonitis (CHP), and 10% had connective tissue disease-related ILD (CTD-ILD). Out of the 114 cases with probable UIP, CTD-ILD corresponded to 39%, IPF to 31%, desquamative interstitial pneumonia to 11%, drug-related lung disease to 9%, and CHP to 8%. In the 24 patients with CT indeterminate for UIP, CTD-ILD was the final diagnosis in 33%, followed by desquamative interstitial pneumonia (21%), and IPF (13%). Patients with typical UIP were more likely to die or had lung transplantation in the follow-up (17.9% and 11.3%, respectively). Conclusion IPF, CHP, and CTD-ILD were the main differential diagnoses in patients with HRCT patterns of typical, probable and indeterminate UIP. Patients with HRCT typical UIP pattern were more likely to die or had lung transplantation in the follow-up.

Analysis of mediastinal lymph node metastasis of stage cT1a-cN0M0 lung adenocarcinoma / 中国胸心血管外科临床杂志

@#Objective    To investigate the mediastinal lymph node metastasis of cT1a-cN0M0 lung adenocarcinoma, so as to provide a theoretical basis for intraoperative lymph node dissection in patients with early stage lung adenocarcinoma. Methods    Clinicopathological features of lung adenocarcinoma patients who received operation in our hospital from 2017 to 2018 were collected. A total of 667 patients including 241 male and 426 female patients at age of 59 (16, 87) years were included. There were 234 patients with pure ground glass nodules, 98 patients with ground glass-predominant tumor, 199 patients with consolidation-predominant tumor and 136 patinets with solid tumor in the study. Postoperative N1 lymph node metastasis occurred in 30 patients and N2 lymph node metastasis occurred in 52 patients. Results    The result of univariate analysis showed that male (P=0.014), higher carcino-embryonic antigen levels (P<0.001), larger nodal diameter (P<0.001), larger consolidation tumor ratio (P<0.001), smaller tumor disappearance ratio (P<0.001), solid nodules (P<0.001), cavitary sign (P=0.005), lobulation sign (P=0.002), spicule sign (P=0.003), pleural indentation sign (P=0.001), bronchus sign (P=0.025) were risk factors for mediastinal lymph node metastasis. In terms of pathology, the N2 positive group had larger size of pathological tissue (P<0.001), more N1 lymph node metastasis (P<0.001), higher pathology T stage (P<0.001), more spread through air space (P=0.001), more pleural invasion (P<0.001), and more lymphovascular invasion (P<0.001). Multivariate analysis showed that lymphovascular invasion (OR=6.9, 95%CI 2.3-20.7, P=0.001), larger consolidation tumor ratio (OR=109.6, 95%CI 3.8-3 124.3, P=0.006), cavitary sign (OR=3.1, 95%CI 1.1-8.3, P=0.028) and N1 lymph node metastasis (OR=15.7, 95%CI 6.7-36.4, P<0.001) were independent risk factors for mediastinal lymph node metastasis. Conclusion    For lung adenocarcinoma, mediastinal lymph node metastasis will not occur in ground glass nodule and ground glass-predominant tumor patients. The probability of mediastinal lymph node metastasis increases with the increase of solid components and presence of cavitary sign. Therefore, different types of lymph node resection can be considered for patients with different imaging findings.

Predicting and grading the degree of difficulty of cochlear implant surgery by evaluating temporal bone using high resolution computed tomography and magnetic resonance imaging

Background: The current study was designed to assess the challenges that arise during cochlear implantation. Hence imaging based grading system, using a structured, 12-point scoring chart was developed with an aim to assess various anatomical factors of temporal bone helpful in contemplating complications involved in surgery and to assess various congenital and acquired abnormalities if detected during scan which can affect cochlear implant surgery.Methods: This was a descriptive study done on 60 patients with sensorineural hearing loss. They were evaluated preoperatively by using HRCT and MRI findings and subsequently underwent cochlear implantation. A 12-point scoring chart was developed based on imaging findings. Surgical times were noted in each case and each imaging point on the scoring chart was correlated with the surgical times.Results: Eleven out of 12 points in the scoring chart proved to be statistically significant in predicting the degree of difficulty of the surgical procedure. One point was not correlating with the surgical timings. Based on the grading system, in the present study, there were 37 patients (61.66%) classified as Grade 1, 16 patients (26.67%) classified as Grade 2 and 7 patients (11.67%) classified as Grade 3.Conclusions: These radiological image findings and its related grading system are relatively easy and quick to assess on readily available pre-operative temporal bone CT scan and MRI. They can form a pre-operative checklist that provides a formalized approach for the surgeons and, in particular surgical trainees, predict and, thus prepare for, potentially challenging cochlear implant cases.

Spectrum of HRCT findings in interstitial lung diseases and their correlation with mediastinal lymphadenopathy

Background: Interstitial lung disease (ILD) represents a heterogeneous non-infectious group of acute and chronic diseases affecting the lung parenchyma. ILDs are usually associated with significant morbidity and mortality, particularly when fibrosis occurs. ILD is usually associated with mediastinal lymph node enlargement, the extent of lymph node enlargement may correlate to disease activity or progression of fibrosis. In the present study, authors have correlated the spectrum of high-resolution CT findings in ILDs with mediastinal lymph node enlargements.Methods: One hundred and four cases of ILDs confirmed by HRCT findings and pulmonary function tests were included in this study. HRCT was performed using a GE 128 SLICE CT OPTIMA 660 scanner, USA with 1.5 mm collimation at full inspiration. The findings were classified into three groups-fibrotic, ground glassing and nodular pattern. Authors assessed the presence, number and sites of enlarged lymph nodes (short axis ≥10 mm in diameter).Results: The largest subsets of patients were found in the 51-60 age groups. Fibrotic pattern was the most common pattern in this study (50%) followed by ground glassing (44%). Nodular pattern was the least predominant pattern (6%). Lymphadenopathy was seen in 84% of UIP and 63% cases of NSIP. P value was 0.049 which indicates a significant relation between lymphadenopathy and various ILDs. A strong relationship between lymphadenopathy and the predominant fibrotic pattern followed by ground glassing was observed.Conclusions: A significant association was established between lymphadenopathy and the type of ILD where fibrotic pattern had the maximum association.

High-Resolution Computed Tomography Lung Spectrum In Symptomatic Adult Hiv-Positive Patients In Correlation With Cd-4 Count

Context: Pulmonary disease accounts for 30–40% of the acute hospitalizations of HIV-positive patients. The CD4 count, anindicator of the severity of immune compromise, is of paramount importance for rendering an appropriate differential diagnosis.High-resolution computed tomography (HRCT) of lung provides detailed visualization of lung parenchyma and can characterizediseases according to pattern and distribution which can help in formulating a differential diagnosis.Aims: The aims of this study were as follows: (1) To identify the radiological appearance/pattern of HIV-associated infections.(2) To correlate the radiological findings with CD4 count.Settings and Design: This was a cross-sectional study using sample size of 100 HIV-infected patients conducted at theDepartment of Radiodiagnosis and Imaging, Gandhi Medical College and Hamidia Hospital, Bhopal.Materials and Methods: A total of 100 adult HIV-infected patients were scanned with HRCT chest and findings were documentedand correlated with their CD4+ counts.Statistical Analysis Used: Data analysis was done using SPSS 21.0. Two-tailed P < 0.05 was considered statistically significant.Results: TB (70%) was the most common infection followed by bacterial pneumonia (14%) and Pneumocystis jiroveci pneumonia(6%). Tuberculosis was found in 29% of advance CD4 count patients and 27% of severe CD4 count patients. Consolidation,airspace nodules, miliary nodules, diffuse ground-glass opacity, and pleural effusion showed significant correlation with CD4counts.Conclusions: Incidence of all these manifestations fairly correlates with the decline of CD4 counts. Early and proper diagnosisof these pulmonary complications in patients with HIV infection and lower CD4 counts will help clinicians to develop a focusedtherapeutic approach in their management.

Role of HRCT in Smoking Related Interstitial Lung Diseases

Background: Smoking induced lung diseases constitute a complex group of disorders, varying from the well-known entity of Chronic Obstructive Pulmonary Disease (COPD) to the more recently described interstitial lung diseases. Aim and objectives: The aim of the study was to delineate the relation between cigarette smoking and the development of interstitial lung disease with declaration of the different types of the interstitial lung associated with smoking. Materials and methods: This was prospective study consisting of patients with smoking history referred to Department of Radiodiagnosis of NRIGH for HRCT with symptoms of progressive dyspnea. Inclusion criteria were smokers with progressive dyspnea, (age range 30-90 years, mean age 54 years ± 8). HRCT was done to all subjects using GE Light Speed Multislice 4 channels. CT scan examination was performed using GE Light Speed Multislice 4 channels present in our radiology department. The examination was done in supine position. A scout was taken with kV 120 and mA 120, then helical scanning was done in caudo-cranial direction to minimize respiration artifacts, using detector row 4, helical thickness 1.25, pitch 1.5:1, speed (mm/rot) 7.5, Detector configuration 4 · 1.25, beam collimation 5.00 mm, interval 1.00, gantry tilt 0.0, FOV depends on the patients’ body build, but is about 35 cm, kV 120–140, mA 120–160, total exposure time about 16 s during breath hold in inspiration. The images acquired were sent to a separate workstation to be processed, manipulated and reconstructed. Reconstruction of the images was done using reconstruction software available at the workstation to attain HRCT axial, coronal and sagittal images. Also mediastinal window images were done for each case. Results: In the present study, the most common seen HRCT pattern was Idiopathic Pulmonary Fibrosis, most affected gender were males and most affected age group was between 60-70 years. Sreedevi Meka, D Ankamma Rao. Role of HRCT in Smoking Related Interstitial Lung Diseases. IAIM, 2019; 6(8): 78-94. Page 79 Conclusion: In the appropriate clinical evaluation and in the presence of typical findings, high - resolution CT plays an essential role in evaluation and definite diagnosis of Smoking Related – Interstitial Lung Disease, and this may obviate further testing. However, lung biopsy may be needed when the high-resolution CT are relatively non-specific or when a confident definitive diagnosis is needed.

Cerebrospinal fluid otorrhea secondary to congenital inner ear dysplasia: diagnosis and management of 18 cases / 浙江大学学报（英文版）（B辑：生物医学和生物技术）

Objective: To describe the characteristics of the clinical presentation, diagnosis, surgical methods, and outcomes of patients with otogenic cerebrospinal fluid (CSF) leakage secondary to congenital inner ear dysplasia. Methods: A retrospective review was performed of 18 patients with otogenic CSF leakage secondary to inner ear dysplasia who underwent surgery in our group from 2007 to 2017 and had a follow-up of at least 4 months. The average length of follow-up was three years. The characteristics of the clinical presentations of all patients, such as self-reported symptoms, radiographic findings, surgical approaches and methods of repair, position of the leakage during surgery, and postoperative course, including the success rate of surgery, are presented. Results: The patients presented mostly with typical symptoms of meningitis, severe hearing impairment, and CSF otorrhea or rhinorrhea. All 18 patients had at least one previous episode of meningitis accompanied by a severe hearing impairment. The preoperative audiograms of 17 patients showed profound sensorineural hearing loss, and one patient had conductive hearing loss. Twelve patients presented with an initial onset of otorrhea, and two had accompanying rhinorrhea. Six patients complained of rhinorrhea, two of whom were misdiagnosed with CSF rhinorrhea and underwent transnasal endoscopy at another hospital. High-resolution computed tomography (HRCT) images can reveal developments in the inner ear, such as expansion of a vestibular cyst, unclear structure of the semicircular canal or cochlea, or signs of effusion in the middle ear or mastoid, which strongly suggest the possibility of CSF otorrhea. The children in the study suffered more severe dysplasia than adults. All 18 patients had CSF leakage identified during surgery. The most common defect sites were in the stapes footplates (55.6%), and 38.9% of patients had a leak around the oval window. One patient had a return of CSF otorrhea during the postoperative period, which did not re-occur following a second repair. Conclusions: CSF otorrhea due to congenital inner ear dysplasia is more severe in children than in adults. The most common symptoms were meningitis, hearing impairment, and CSF otorrhea or rhinorrhea. HRCT has high diagnostic accuracy for this disease. The most common fistula site was around the oval window, including the stapes footplates and the annular ligament.