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1.
Journal of Southern Medical University ; (12): 219-224, 2023.
Article in Chinese | WPRIM | ID: wpr-971518

ABSTRACT

OBJECTIVE@#To investigate the value of lymphatic contrast-enhanced ultrasound (LCEUS) with intra-glandular injection of contrast agent for diagnosis of central compartment lymph node metastasis of thyroid cancer.@*METHODS@#From November, 2020 to May, 2022, the patients suspected of having thyroid cancer and scheduled for biopsy at our center received both conventional ultrasound and LCEUS examinations of the central compartment lymph nodes before surgery. All the patients underwent surgical dissection of the lymph nodes. The perfusion features in LCEUS were classified as homogeneous enhancement, heterogeneous enhancement, regular/irregular ring, and non-enhancement. With pathological results as the gold standard, we compared the diagnostic ability of conventional ultrasound and LCEUS for identifying metastasis in the central compartment lymph nodes.@*RESULTS@#Forty-nine patients with 60 lymph nodes were included in the final analysis. Pathological examination reported metastasis in 34 of the lymph nodes, and 26 were benign lymph nodes. With ultrasound findings of heterogeneous enhancement, irregular ring and non-enhancement as the criteria for malignant lesions, LCEUS had a diagnostic sensitivity, specificity and accuracy of 97.06%, 92.31% and 95% for diagnosing metastatic lymph nodes, respectively, demonstrating its better performance than conventional ultrasound (P < 0.001). Receiver-operating characteristic curve analysis showed that LCEUS had a significantly greater area under the curve than conventional ultrasound for diagnosing metastatic lymph nodes (94.7% [0.856-0.988] vs 78.2% [0.656-0.878], P=0.003).@*CONCLUSION@#LCEUS can enhance the display and improve the diagnostic accuracy of the central compartment lymph nodes to provide important clinical evidence for making clinical decisions on treatment of thyroid cancer.


Subject(s)
Humans , Lymphatic Metastasis/diagnostic imaging , Thyroid Neoplasms/pathology , Ultrasonography/methods , Lymph Nodes/pathology , ROC Curve
2.
Asian Journal of Andrology ; (6): 97-101, 2022.
Article in English | WPRIM | ID: wpr-928516

ABSTRACT

To efficiently remove all recurrent lymph nodes (rLNs) and minimize complications, we developed a combination approach that consisted of 68Gallium prostate-specific membrane antigen (PSMA) ligand positron emission tomography (PET)/computed tomography (CT) and integrated indocyanine green (ICG)-guided salvage lymph node dissection (sLND) for rLNs after radical prostatectomy (RP). Nineteen patients were enrolled to receive such treatment. 68Ga-PSMA ligand PET/CT was used to identify rLNs, and 5 mg of ICG was injected into the space between the rectum and bladder before surgery. Fluorescent laparoscopy was used to perform sLND. While extensive LN dissection was performed at level I, another 5 mg of ICG was injected via the intravenous route to intensify the fluorescent signal, and laparoscopy was introduced to intensively target stained LNs along levels I and II, specifically around suspicious LNs, with 68Ga-PSMA ligand PET/CT. Next, both lateral peritonea were exposed longitudinally to facilitate the removal of fluorescently stained LNs at levels III and IV. In total, pathological analysis confirmed that 42 nodes were rLNs. Among 145 positive LNs stained with ICG, 24 suspicious LNs identified with 68Ga-PSMA ligand PET/CT were included. The sensitivity and specificity of 68Ga-PSMA ligand PET/CT for detecting rLNs were 42.9% and 96.6%, respectively. For ICG, the sensitivity was 92.8% and the specificity was 39.1%. At a median follow-up of 15 (interquartile range [IQR]: 6-31) months, 15 patients experienced complete biochemical remission (BR, prostate-specific antigen [PSA] <0.2 ng ml-1), and 4 patients had a decline in the PSA level, but it remained >0.2 ng ml-1. Therefore, 68Ga-PSMA ligand PET/CT integrating ICG-guided sLND provides efficient sLND with few complications for patients with rLNs after RP.


Subject(s)
Humans , Male , Gallium Isotopes , Gallium Radioisotopes , Indocyanine Green , Ligands , Lymph Node Excision , Lymphatic Metastasis/diagnostic imaging , Neoplasm Recurrence, Local/surgery , Positron Emission Tomography Computed Tomography , Prostate , Prostatectomy , Prostatic Neoplasms/surgery , Salvage Therapy
3.
Acta Academiae Medicinae Sinicae ; (6): 65-71, 2022.
Article in Chinese | WPRIM | ID: wpr-927848

ABSTRACT

Objective To evaluate the efficacy of ultrasound and computed tomography (CT) in diagnosing cervical lymph node metastasis (CLNM) of papillary thyroid carcinoma (PTC). Methods The patients with PTC treated by surgery in the Chinese PLA General Hospital from January 2016 to January 2021 were selected for analysis.All the patients underwent preoperative ultrasound and CT examinations,the diagnostic values of which for CLNM were retrospectively analyzed. Results A total of 322 PTC patients were enrolled in this study,including 242 with CLNM and 80 with non-CLNM.The CLNM group and non-CLNM group had significant differences in age,tumor size,and maximum size of lateral CLNM (χ2=20.34,27.34,and 4.30,respectively,all P<0.001).For the central compartment,lateral compartment,and overall compartment,ultrasound diagnosis showed higher sensitivity (χ 2=82.26,P<0.001;χ2=114.01,P<0.001;χ2=82.26,P<0.001) and accuracy (χ2=20.27,P<0.001;χ2=15.56,P<0.001;χ2=44.00,P<0.001) than CT,and had no significant differences from ultrasound combined with CT (all P>0.05).However,ultrasound diagnosis had lower specificity than CT (χ2=17.01,P<0.001;χ2=21.29,P<0.001) in the central compartment and lateral compartment.Receiver operating characteristic curve analysis showed that in the central compartment,lateral compartment,and overall compartment,ultrasound diagnosis had larger AUC than CT (Z=2.99,P=0.003;Z=3.86,P<0.001;Z=4.47,P<0.001) and had no significant difference from ultrasound combined with CT (Z=1.87,P=0.062;Z=1.68,P=0.093;Z=1.61,P=0.107). Conclusions Ultrasound and CT have their own advantages in the diagnosis of central and lateral CLNM.In general,ultrasound has better performance than CT in the diagnosis of CLNM.


Subject(s)
Humans , Lymphatic Metastasis/diagnostic imaging , Retrospective Studies , Thyroid Cancer, Papillary/pathology , Thyroid Neoplasms/surgery , Tomography, X-Ray Computed , Ultrasonography/methods
4.
Acta Academiae Medicinae Sinicae ; (6): 338-342, 2021.
Article in Chinese | WPRIM | ID: wpr-887864

ABSTRACT

Objective To explore the value of trans-lymphatic contrast-enhanced ultrasound(CEUS)in the diagnosis of cervical lymph node metastasis of thyroid cancer. Methods The patients with suspected thyroid cancer underwent conventional ultrasound and trans-lymphatic CEUS examinations before the biopsy.The differences in ultrasound and CEUS characteristics of cervical lymph nodes between the metastatic group and the non-metastatic group were compared,and pathological results were regarded as the golden standard. Results Twenty patients had thyroid cancer,including 12 cases with lymph node metastasis and 8 cases without metastasis.The diagnostic sensitivity(91.7%


Subject(s)
Humans , Contrast Media , Lymph Nodes/diagnostic imaging , Lymphatic Metastasis/diagnostic imaging , Thyroid Neoplasms/diagnostic imaging , Ultrasonography
5.
Arch. endocrinol. metab. (Online) ; 64(6): 803-809, Nov.-Dec. 2020. tab, graf
Article in English | LILACS | ID: biblio-1142206

ABSTRACT

ABSTRACT Objective: The objective of the study was to develop an association between clinicopathologic and sonographic features of patients with papillary thyroid microcarcinoma and the prevalence of lymph node metastasis. Subjects and methods: Clinicopathologic and sonographic features of 415 patients of papillary thyroid microcarcinoma with (n = 102) or without (n = 313) lymph node metastasis were retrospectively reviewed. The thickness of the lymph node ≥ 6 mm with intra-lymph nodal occupying lesions considered lymph node metastasis. Also, it was considered metastasis if lymph node perfusion or blood flow defect was found with any thickness size. Univariate following multivariate analysis was performed for the prediction of sonographic features and clinicopathologic factors for the prevalence of lymph node metastasis. Results: Male gender ( p = 0.041), age < 45 years ( p = 0.042), preoperative calcitonin > 65 pg/ mL ( p = 0.039), nodule size > 5 mm in diameter ( p = 0.038), bilaterality ( p = 0.038), tumor capsular invasion ( p = 0.048), cystic change ( p = 0.047), and hyper vascularity ( p = 0.049) of thyroid nodules were associated with lymph node metastasis. Also, thyroid nodules 5 mm and more in diameter may have high aggressiveness. Conclusion: These data helped the surgeon for individualized treatment in thyroid carcinoma and avoid unnecessary prophylactic surgery of the lymph node.


Subject(s)
Humans , Male , Thyroidectomy , Thyroid Neoplasms/surgery , Thyroid Neoplasms/epidemiology , Thyroid Neoplasms/diagnostic imaging , Carcinoma, Papillary , Prevalence , Retrospective Studies , Risk Factors , Lymph Nodes/diagnostic imaging , Lymphatic Metastasis/diagnostic imaging , Middle Aged
6.
Int. braz. j. urol ; 45(6): 1270-1274, Nov.-Dec. 2019. graf
Article in English | LILACS | ID: biblio-1056328

ABSTRACT

ABSTRACT Bladder cancer is a common cancer that may present as superficial, invasive, or metastatic disease. Non-muscle-invasive bladder cancer (NMIBC) represents the majority of bladder cancer diagnoses, but represents a spectrum of disease with a variable clinical course, notably for significant risk of recurrence and potential for progression. NMIBC metastasis to distant organs without local invasion or regional metastasis is a very rare occurrence, so there are limited case reports about early metastasis in the literature.


Subject(s)
Humans , Male , Aged , Urinary Bladder Neoplasms/pathology , Carcinoma/secondary , Head and Neck Neoplasms/pathology , Lymphatic Metastasis/pathology , Urinary Bladder Neoplasms/diagnostic imaging , Carcinoma/diagnostic imaging , Tomography, X-Ray Computed , Ultrasonography , Fatal Outcome , Head and Neck Neoplasms/diagnostic imaging , Lymphatic Metastasis/diagnostic imaging
7.
Rev. Assoc. Med. Bras. (1992) ; 65(6): 761-766, June 2019. tab, graf
Article in English | LILACS | ID: biblio-1041044

ABSTRACT

SUMMARY OBJECTIVE: CT perfusion (CTP) is an imaging technique that can be used to evaluate the changes in the microcirculation of tumor tissues. Our study aimed to investigate the role of CTP in predicting mediastinal lymph node metastasis. METHODS: Clinical data of 58 patients who received surgical resection of lung cancer and lymph node dissection in our hospital from June 2012 to December 2014 were collected. Patients were divided into a positive lymph node metastasis group and a negative lymph node metastasis group. Parameters of CTP, including peak enhancement intensity (PEI), perfusion value (PV), as well as blood volume (BV), were compared between the two groups. The receiver-operating characteristic (ROC) curve was used to predict mediastinal lymph node metastasis. RESULTS: The PV of the positive lymph node metastasis group was significantly higher than that of the negative group (p < 0.001). The ROC curve analysis showed that PV can be used as an index to predict mediastinal lymph node metastasis of lung cancer. The sensitivity and specificity of a PV greater than 7.5ml·min-1·ml-1 in predicting lymph node metastasis of lung cancer were 78.3 % and 91.4 %, respectively. CONCLUSION: The PV of low dose CT perfusion can be used as an index for predicting mediastinal lymph node metastasis of lung cancer.


RESUMO OBJETIVOS: A perfusão por TC objetiva (CTP) é uma técnica de imagem que pode ser usada para avaliar as alterações na microcirculação de tecidos tumorais. Nosso estudo teve como objetivo investigar o papel da CTP na predição de metástases em linfonodos mediastinais. MÉTODOS: Dados clínicos de 58 pacientes que receberam ressecção cirúrgica de câncer de pulmão e dissecção de linfonodos em nosso hospital de junho de 2012 a dezembro de 2014 foram coletados. Os pacientes foram divididos em grupo positivo para metástase linfonodal e grupo negativo para metástase linfonodal. Parâmetros de CTP incluindo pico de intensidade de realce (PEI) e valor de perfusão (PV), bem como volume de sangue (BV), foram comparados entre os dois grupos. A curva característica de operação do receptor (ROC) foi usada para predizer metástase linfonodal mediastinal. RESULTADOS: PV do grupo de linfonodos metastáticos positivos foi significativamente maior do que o grupo negativo de linfonodos metastáticos (p<0,001). A análise da curva ROC mostrou que a PV pode ser usada como um índice para predizer a metástase linfonodal mediastinal do câncer de pulmão. A sensibilidade e a especificidade da VP maior que 7,5ml · min-1 · ml-1 na predição de metástase linfonodal de câncer de pulmão foram de 78,3% e 91,4%, respectivamente. CONCLUSÃO: A VP de perfusão por TC de baixa dose pode ser usada como um índice para a predição de metástase linfonodal mediastinal de câncer de pulmão.


Subject(s)
Humans , Male , Female , Adult , Aged , Aged, 80 and over , Carcinoma/secondary , Tomography, X-Ray Computed/methods , Perfusion Imaging/methods , Lung Neoplasms/pathology , Lymphatic Metastasis/diagnostic imaging , Mediastinal Neoplasms/secondary , Mediastinal Neoplasms/diagnostic imaging , Radiation Dosage , Reference Standards , Reproducibility of Results , Sensitivity and Specificity , Middle Aged
8.
Braz. j. otorhinolaryngol. (Impr.) ; 85(3): 297-302, May-June 2019. tab, graf
Article in English | LILACS | ID: biblio-1011631

ABSTRACT

Abstract Introduction: Ultrasonography is the easiest non-invasive method to diagnose lymph node metastases in patients with head and neck cancer. However, since CT scans are often preferred in the evaluation of primary tumours of these patients, information about lymphatic metastases may also available in these patients. Therefore, ultrasound is not routinely employed in the evaluation of these patients. However, elastography technique, a recent development in ultrasound technology, could make use of ultrasonography in these patients even more widespread, even though it is still not widely used today. Objectives: The aim of this study was to evaluate the role of sonographic elastography in the diagnosis of lymph node metastasis of head and neck cancer. Methods: Twenty-three patients diagnosed with head and neck cancer and scheduled for surgical treatment including neck dissection were included in the study. All patients underwent neck examination by palpation, ultrasound elastography and computerized tomography with contrast. To compare the diagnostic performance of palpation, ultrasound elastography and computerized tomography, the findings of each examination method were compared with the histopathological examination results of neck specimens. Results: 15 (65.2%) patients had a primary tumour in the larynx; 7 (30.4%) in the oral cavity; and 1 (4.3%) in the parotid. 7 (30.4%) out of 23 patients underwent bilateral neck dissection. In total, 30 neck dissections were hereby taken into account during study. Ultrasound elastography showed higher accuracy (83.3%) and higher sensitivity (82.4%) than palpation and computerized tomography, but the specificity of ultrasound elastography was lower (84.6%) than palpation and computerized tomography. Conclusions: Ultrasound elastography is helpful for the diagnosis of lymph node metastases in patients with head and neck cancer. Due to its non-invasive character, it can be used safety in combination with other radiological techniques to support or improve their diagnostic performance.


Resumo Introdução: A ultrassonografia é o método mais fácil e não invasivo para diagnosticar metástases em linfonodos em pacientes com câncer de cabeça e pescoço. No entanto, como as tomografias computadorizadas são frequentemente preferidas na avaliação de tumores primários desses pacientes, as informações sobre metástases linfáticas também se tornam disponíveis. Portanto, a ultrassonografia não faz parte da avaliação de rotina desses pacientes. Entretanto, a técnica de elastografia, um desenvolvimento mais recente na tecnologia de ultrassom, poderia tornar o uso da ultrassonografia mais difundido nesses pacientes, embora atualmente ainda não seja amplamente usado. Objetivo: Avaliar o papel da elastografia ultrassonográfica no diagnóstico de metástases em linfonodos em casos de câncer de cabeça e pescoço. Método: Foram incluídos no estudo 23 pacientes diagnosticados com câncer de cabeça e pescoço e com tratamento cirúrgico programado, inclusive esvaziamento cervical. Todos os pacientes foram submetidos a exame cervical por palpação, elastografia ultrassonográfica e tomografia computadorizada com contraste. Para comparar o desempenho diagnóstico da palpação, elastografia ultrassonográfica e tomografia computadorizada, os achados de cada método de exame foram comparados com os resultados do exame histopatológico de amostras obtidas do pescoço. Resultados: Dos pacientes, 15 (65,2%) apresentaram tumor primário na laringe; sete (30,4%) na cavidade oral; e um (4,3%) na parótida. Sete (30,4%) dos 23 pacientes foram submetidos a esvaziamento cervical bilateral. Foram considerados durante o estudo 30 pescoços. A elastografia ultrassonográfica mostrou maior acurácia (83,3%) e maior sensibilidade (82,4%) do que a palpação e a tomografia computadorizada, mas a especificidade da elastografia ultrassonográfica foi menor (84,6%) do que a palpação e a tomografia computadorizada. Conclusões: A elastografia ultrassonográfica é útil para o diagnóstico de metástases de linfonodos em pacientes com câncer de cabeça e pescoço. Graças ao seu caráter não invasivo, pode ser usada com segurança em combinação com outras técnicas radiológicas para apoiar ou melhorar o desempenho diagnóstico.


Subject(s)
Humans , Male , Female , Adult , Middle Aged , Aged , Head and Neck Neoplasms/diagnostic imaging , Lymph Nodes/diagnostic imaging , Lymphatic Metastasis/diagnostic imaging , Cross-Sectional Studies , Predictive Value of Tests , Sensitivity and Specificity , Elasticity Imaging Techniques , Head and Neck Neoplasms/pathology , Lymph Nodes/pathology , Lymphatic Metastasis/pathology , Neoplasm Staging
9.
Rev. Assoc. Med. Bras. (1992) ; 64(2): 170-174, Feb. 2018. tab, graf
Article in English | LILACS | ID: biblio-896438

ABSTRACT

Summary Objective: To investigate the diagnostic criteria of mediastinal lymph node metastasis (MLNM) in esophageal carcinoma (EC) by comparing the lymph node sizes measured by computed tomography (CT) and obtained by postoperative pathological examination. Method: A total of 305 EC patients were selected. MLNM location, shortest diameter and number were investigated one week before surgery, and then compared with their pathological findings. Results: The receiver operating characteristic (ROC) curve analysis revealed that the minimum diameters of MLNM in the thoracic cavity was 8 mm (area under curve [AUC] = 0.766, Youden index = 0.424), 5 mm in supraclavicular fossa (AUC = 0.785, Youden index = 0.494), 6 mm in tracheoesophageal groove (AUC = 0.755, Youden index = 0.405); the sensitivity was increased significantly, and the Youden index was increased significantly when compared with 10 mm. Conclusion: The shortest diameter of diagnostic criteria of lymph nodes in EC could be less than 10 mm on CT.


Subject(s)
Humans , Male , Female , Adult , Aged , Aged, 80 and over , Esophageal Neoplasms/pathology , Carcinoma/pathology , Lymphatic Metastasis/pathology , Mediastinal Neoplasms/pathology , Esophageal Neoplasms/diagnostic imaging , Carcinoma/diagnostic imaging , Tomography, X-Ray Computed/methods , Sensitivity and Specificity , Lymph Node Excision , Lymphatic Metastasis/diagnostic imaging , Mediastinal Neoplasms/secondary , Middle Aged
10.
Journal of Gynecologic Oncology ; : e27-2016.
Article in English | WPRIM | ID: wpr-213434

ABSTRACT

OBJECTIVE: Indocyanine green with near-infrared fluorescence imaging (NIR-ICG) is a new tracer modality in the limelight used for lymphatic mapping. The advantage of this method is to provide real-time image during surgery. To use ICG for image guided lymph node dissection, a surgeon needs to know initial appearing time and duration. METHODS: A 52-year-old woman undertook surgery diagnosed with endometrial cancer. She had no past medical history and her body mass index was 25.3 kg/m2. Preoperative magnetic resonance imaging examination revealed 2.7 cm sized cancerous mass in the endometrial cavity with superficial myometrial invasion without lymph node enlargement. Four mL (1.25 mg/mL) of ICG solution was prepared for injection. For each site, 1 mL of solution was injected superficially, 2-3 mm into the cervical submucosa and another 1 mL was injected deep, 1-2 cm into the stroma of the cervix. We recorded video with 30° 10 mm scope equipped with a specific lens and light source emitting both visible and NIR light (KARL STORZ GmbH & Co. KG, Tuttlingen, Germany). RESULTS: Pelvic lymph node was visualized from around 5 minutes. ICG was dispersed into organs after hysterectomy (53 minutes after ICG injection), yet we could clearly identify sentinel lymph node (SLN). Pathology revealed endometriod adenocarcinoma grade I, myometrial invasion with less than half of myometrium and no lymph node metastasis. CONCLUSION: Cervical injection of ICG provides good visualization of SLN from 5 minutes to over an hour. Our film gives an idea about time management to make a plan for surgery and not to miss SNLs.


Subject(s)
Female , Humans , Middle Aged , Adenocarcinoma/diagnostic imaging , Coloring Agents/therapeutic use , Endometrial Neoplasms/diagnostic imaging , Indocyanine Green/therapeutic use , Lymphatic Metastasis/diagnostic imaging , Optical Imaging/methods , Sentinel Lymph Node/diagnostic imaging , Time-Lapse Imaging/methods
11.
Korean Journal of Radiology ; : 20-28, 2014.
Article in English | WPRIM | ID: wpr-114861

ABSTRACT

Breast metastases from extramammary malignancies are uncommon. The most common sources are lymphomas/leukemias and melanomas. Some of the less common sources include carcinomas of the lung, ovary, and stomach, and infrequently, carcinoid tumors, hypernephromas, carcinomas of the liver, tonsil, pleura, pancreas, cervix, perineum, endometrium and bladder. Breast metastases from extramammary malignancies have both hematogenous and lymphatic routes. According to their routes, there are common radiological features of metastatic diseases of the breast, but the features are not specific for metastases. Typical ultrasound (US) features of hematogenous metastases include single or multiple, round to oval shaped, well-circumscribed hypoechoic masses without spiculations, calcifications, or architectural distortion; these masses are commonly located superficially in subcutaneous tissue or immediately adjacent to the breast parenchyma that is relatively rich in blood supply. Typical US features of lymphatic breast metastases include diffusely and heterogeneously increased echogenicities in subcutaneous fat and glandular tissue and a thick trabecular pattern with secondary skin thickening, lymphedema, and lymph node enlargement. However, lesions show variable US features in some cases, and differentiation of these lesions from primary breast cancer or from benign lesions is difficult. In this review, we demonstrate various US appearances of breast metastases from extramammary malignancies as typical and atypical features, based on the results of US and other imaging studies performed at our institution. Awareness of the typical and atypical imaging features of these lesions may be helpful to diagnose metastatic lesions of the breast.


Subject(s)
Adolescent , Adult , Female , Humans , Male , Middle Aged , Adenocarcinoma/secondary , Breast Neoplasms/secondary , Breast Neoplasms, Male/secondary , Carcinoma/secondary , Lymphatic Metastasis/diagnostic imaging , Lymphoma, Extranodal NK-T-Cell/pathology , Lymphoma, Large B-Cell, Diffuse/pathology , Melanoma/secondary , Multiple Myeloma/secondary , Neoplastic Cells, Circulating/pathology
12.
Korean Journal of Radiology ; : 29-36, 2014.
Article in English | WPRIM | ID: wpr-114860

ABSTRACT

OBJECTIVE: To assess the feasibility of computed tomography (CT) lymphography using ethiodized oil for sentinel node mapping in experimentally induced VX2 carcinoma in the rabbit thigh. MATERIALS AND METHODS: This experiment received approval from the institutional animal use and care administrative advisory committee. Twenty-three rabbits with VX2 carcinoma in the thigh underwent CT before and after (1 hour, 2 hour) peritumoral injection of 2 mL ethiodized oil. After the CT examination, sentinel nodes were identified by peritumoral injection of methylene blue and subsequently removed. The retrieved sentinel and non-sentinel lymph nodes were investigated with radiographic and pathologic examinations. Based on the comparison of CT findings with those of radiographic and pathologic examinations, the diagnostic performance of CT for sentinel node identification was assessed. RESULTS: All 23 rabbits showed 53 ethiodized oil retention nodes on post-injection CT and specimen radiography, and 52 methylene blue-stained nodes at the right femoroiliac area. Of the 52 blue-stained sentinel nodes, 50 nodes demonstrated ethiodized oil retention. Thus, the sentinel node detection rate of CT was 96% (50 of 52). On pathologic examination, 28 sentinel nodes in 17 rabbits (nodes/rabbit, mean +/- standard deviation, 1.7 +/- 0.6) harbored metastasis. Twenty seven of the 28 metastatic sentinel nodes were found to have ethiodized oil retention. CONCLUSION: Computed tomography lymphography using ethiodized oil may be feasible for sentinel node mapping in experimentally induced VX2 carcinoma in the rabbit thigh.


Subject(s)
Animals , Female , Rabbits , Carcinoma/pathology , Contrast Media , Ethiodized Oil , Feasibility Studies , Injections , Lymph Node Excision/methods , Lymph Nodes/pathology , Lymphatic Metastasis/diagnostic imaging , Lymphography/methods , Thigh , Tomography, X-Ray Computed/methods
13.
The Korean Journal of Gastroenterology ; : 340-347, 2014.
Article in English | WPRIM | ID: wpr-56672

ABSTRACT

BACKGROUND/AIMS: Accurate preoperative detection of regional lymph nodes and evaluation of tumor resectability is critical to determining the most adequate therapy for gastric cancer. The aim of this study is to identify a possible link between 18F-fluorodeoxyglucose (18F-FDG) uptake on PET scan combined with CT scan (PET/CT) and predictions of lymph node metastasis and non-curative surgery. METHODS: This study included 156 gastric cancer patients who underwent preoperative 18F-FDG PET/CT and surgery. In cases with perceptible FDG uptake in the primary tumor or lymph nodes, the maximum standardized uptake value (SUVmax) was calculated. RESULTS: In multivariate analysis, non-curative surgery (OR, 11.05; 95% CI, 1.10-111.08; p=0.041), tumor size (> or =3 cm) (OR, 7.39; 95% CI, 2.41-22.70; p or =3 cm) (OR, 3.15; 95% CI, 1.16-8.58; p=0.025) and lymph node metastasis (OR, 3.36; 95% CI, 1.23-9.14; p=0.018) showed significant association with 18F-FDG uptake in lymph node. When the SUVmax of the primary gastric tumor was greater than 3.75, the sensitivity and specificity of PET/CT with regard to the diagnosis of metastatic lymph node were 73.5% and 74.5%. When the SUVmax of the primary gastric tumor was greater than 4.35 and the FDG uptake of lymph nodes was positive, non-curative surgery was predicted with a sensitivity of 58.8% and specificity of 91.6%. CONCLUSIONS: A high FDG uptake of the gastric tumor was related to histologic positive lymph nodes and non-curative surgery.


Subject(s)
Adult , Aged , Aged, 80 and over , Female , Humans , Male , Middle Aged , Area Under Curve , Carcinoma/diagnosis , Fluorodeoxyglucose F18 , Lymph Nodes/surgery , Lymphatic Metastasis/diagnostic imaging , Neoplasm Staging , Odds Ratio , Peritoneal Neoplasms/diagnosis , Positron-Emission Tomography , ROC Curve , Regression Analysis , Stomach Neoplasms/diagnosis , Tomography, X-Ray Computed
14.
Korean Journal of Radiology ; : 417-424, 2012.
Article in English | WPRIM | ID: wpr-72933

ABSTRACT

OBJECTIVE: To measure the intra-fraction displacements of the mediastinal metastatic lymph nodes by using four-dimensional CT (4D-CT) in non-small cell lung cancer (NSCLC). MATERIALS AND METHODS: Twenty-four patients with NSCLC, who were to be treated by using three dimensional conformal radiation therapy (3D-CRT), underwent a 4D-CT simulation during free breathing. The mediastinal metastatic lymph nodes were delineated on the CT images of 10 phases of the breath cycle. The lymph nodes were grouped as the upper, middle and lower mediastinal groups depending on the mediastinal regions. The displacements of the center of the lymph node in the left-right (LR), anterior-posterior (AP), and superior-inferior (SI) directions were measured. RESULTS: The mean displacements of the center of the mediastinal lymph node in the LR, AP, and SI directions were 2.24 mm, 1.87 mm, and 3.28 mm, respectively. There were statistically significant differences between the displacements in the SI and LR, and the SI and AP directions (p < 0.05). For the middle and lower mediastinal lymph nodes, the displacement difference between the AP and SI was statistically significant (p = 0.005; p = 0.015), while there was no significant difference between the LR and AP directions (p < 0.05). CONCLUSION: The metastatic mediastinal lymph node movements are different in the LR, AP, and SI directions in patients with NSCLC, particularly for the middle and lower mediastinal lymph nodes. The spatial non-uniform margins should be considered for the metastatic mediastinal lymph nodes in involved-field radiotherapy.


Subject(s)
Adult , Aged , Aged, 80 and over , Female , Humans , Male , Middle Aged , Carcinoma, Non-Small-Cell Lung/diagnostic imaging , Contrast Media , Four-Dimensional Computed Tomography/methods , Iohexol/analogs & derivatives , Lung Neoplasms/diagnostic imaging , Lymphatic Metastasis/diagnostic imaging , Mediastinum/diagnostic imaging , Radiographic Image Interpretation, Computer-Assisted , Statistics, Nonparametric
15.
Medical Principles and Practice. 2003; 12 (1): 17-22
in English | IMEMR | ID: emr-63855

ABSTRACT

As the performance of early [H+1 to H+4] and late [D1] lymphoscintigraphic images raises organizational problems in outpatient surgery for breast cancer, only early images are generally obtained. The present study evaluated whether two series of images are better than one and defined the advantages of both methodologies. One hundred and eighteen patients with infiltrating breast carcinoma [T0, T1 and T2] were included in the study: 87 in group A [early and late images] and 31 in group B [only early images]. All patients received two peritumoral injections of 99mTc-sulfur colloid, 15-18 MBq [group A] and <15 MBq [group B]. During the operation, the patent blue bye technique was associated with radioactivity detection. The two groups were comparable for histological type and tumor size and localization. Successful localization of sentinel nodes on early lymphoscintigraphic images was significantly greater for group B. The identification of a sentinel node focus on early lymphoscintigraphy increased by 10% during the study. Sentinel node detection by the isotopic method alone, or the two methods combined, was comparable for both groups. In radioactivity detection, the count rate for sentinel nodes versus background [contralateral breast] was similar for the two groups. During the learning phase, two series of images gave a definite advantage. Subsequently, lymphoscintigraphy performed at +2 h was sufficient [the results for the two groups became indistinguishable]


Subject(s)
Humans , Female , Lymphatic Metastasis/diagnosis , Lymphatic Metastasis/diagnostic imaging , Lymph Nodes/diagnostic imaging , Learning , Neoplasm Staging , Neoplasm Metastasis , Radionuclide Imaging
16.
Indian J Pathol Microbiol ; 1993 Jan; 36(1): 21-7
Article in English | IMSEAR | ID: sea-74520

ABSTRACT

The study was conducted on 63 patients with breast lump and twenty normal healthy females. In benign breast disease, a significant (P < 0.001) rise in serum IgA, significant (P < 0.001) decrease in IgG and no change in IgM levels was seen before operation. A significant decrease (P < 0.001) in serum IgA and significant increase in IgG and IgM was observed post operatively. In carcinoma breast, a significant (P < 0.001) elevation in IgA, IgG and IgM levels was found pre-operatively with a concomitant decrease in serum IgA and IgG and increase in serum IgM levels, post operatively. Trans-sternal phlebography (TSP) carried out with 95.23% success has revealed significant (P < 0.001) change in the staging of carcinoma breast. The increased levels of serum immunoglobulins associated with the patients of carcinoma breast with metastasis has led to conclude that these levels, if punctuated with TSP findings can lead to better assessment of the staging of carcinoma breast and thereby its management.


Subject(s)
Breast Diseases/blood , Breast Neoplasms/blood , Female , Humans , Hypergammaglobulinemia/etiology , Immunoglobulins/blood , Incidence , Lymph Nodes/blood supply , Lymphatic Metastasis/diagnostic imaging , Neoplasm Proteins/blood , Neoplasm Staging , Phlebography , Biomarkers, Tumor/blood
17.
J Indian Med Assoc ; 1978 Dec; 71(11): 292-3
Article in English | IMSEAR | ID: sea-105657
20.
Indian J Cancer ; 1969 Jun; 6(2): 66-75
Article in English | IMSEAR | ID: sea-50675
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