Clinical safety and efficacy of microwave ablation for small renal masses

ABSTRACT Purpose: CT-guided MWA is a safe and effective tool that should be utilized in the treatment of small renal masses (SRMs). We aim to clarify the utility of CT-guided MWA by examining patient outcomes such as recurrence, treatment success, changes in renal function, and complications. Methods: A retrospective review of consecutive patients with SRMs who underwent same day renal mass biopsy (RMB) and CT-guided MWA between 2015 and 2022 was performed. Treatment safety was assessed by 30-day complications according to the Clavien-Dindo system and change in eGFR >30 days post-procedure. Treatment efficacy was defined by local recurrence and incomplete treatment rates and calculated using the Kaplan-Meier method. Results: A total of 108 renal masses were found in 104 patients. The overall complication rate was 7.4% (8/108), of which 4 were major complications (3.7%). For those with renal function available >30 days post ablation, the median eGFR was 47.2 (IQR: 36.0, 57), compared to 52.3 (IQR: 43.7, 61.5) pre-ablation, p<0.0001. 5-year local recurrence free survival was 86%. Among those with biopsy proven malignancy (n= 66), there were five local recurrences (7.54%) occurring at a median of 25.1 months (IQR 19.9, 36.2) and one case (1.5%) of incomplete treatment. Conclusions: As the medical field continues to evolve towards less invasive interventions, MWA offers a valuable tool in the management of renal masses. With low major complication and recurrence rates, our findings support the utility of CT-guided MWA as a tool for treatment of SRMs.

Resección de metástasis pancreáticas: análisis de resultados quirúrgicos y oncológicos. Estudio de cohorte retrospectiva / Pancreatic resections for metastases in the pancreas: analysis of surgical and oncologic outcomes. A retrospective cohort study

RESUMEN Antecedentes: las metástasis pancreáticas, si bien son poco frecuentes, representan una entidad clínica cuyo diagnóstico probablemente se incrementará en el futuro por el aumento de los programas de seguimiento oncológico. Objetivo: describir los resultados quirúrgicos y oncológicos de una serie de pacientes operados por metástasis pancreáticas. Materiales y métodos: se realizó un estudio de cohorte retrospectivo, descriptivo, multicéntrico, de los pacientes sometidos a resecciones pancreáticas por metástasis entre enero de 2016 y diciembre de 2022, en tres efectores de salud por el mismo grupo quirúrgico. Resultados: fueron operados 19 pacientes, con una media de edad de 59 años (45-79), 11 de sexo femenino, en buen estado general y sin otra evidencia de enfermedad oncológica. El origen de los tumores primarios fue 14 en riñón (7 diagnosticados durante el seguimiento), uno carcinoma mamario, uno melanoma, uno testicular, uno colorrectal y uno de cuello de útero. Las técnicas quirúrgicas empleada fueron: 7 esplenopancreatectomías (5 videolaparoscópicas y 2 convencionales), 4 enucleaciones (3 convencionales y 1 videolaparoscópica), 3 duodenopancreatectomías cefálicas convencionales, 2 duodenopancreatectomías totales convencionales, 2 pancreatectomías centrales convencionales, y una pancreatectomía corporocaudal con preservación del bazo. No se registró mortalidad operatoria (dentro de los 90 días posoperatorios), y presentaron una supervivencia global y libre de enfermedad de 58 y 53 meses, respectivamente. Conclusión: la resección de metástasis pancreáticas, en casos seleccionados, con un abordaje multidisciplinario, y en centros de alto volumen de patología hepatobiliopancreática, es segura y permite buenos resultados oncológicos y de supervivencia global.

ABSTRACT Background: Pancreatic metastases are rare but are likely to be diagnosed more frequently in the future due to the increase in oncology surveillance programs. Objective: The aim of this study was to describe the surgical and oncologic outcomes of a series of patients undergoing surgery for pancreatic metastases. Materials and methods: We conducted a retrospective, descriptive, and multicenter cohort study on patients who underwent pancreatic resections for metastases in the pancreas by the same surgical group between January 2016 and December 2022 in three healthcare providers. Results: A total of 19 patients were operated on, mean age was 59 years (45-79), and 11 were women with good performance status and no other evidence of oncologic disease. Clear cell renal cell carcinoma was the primary tumor in 14 cases (7 diagnosed during surveillance), and the remaining primary tumors were one case of breast ductal carcinoma, one testicular cancer, one colorectal cancer, one melanoma and one cervical cancer. The surgical techniques used were pancreatectomies and splenectomies in 7 patients (5 via laparoscopy and 2 conventional procedures), 4 enucleations (3 conventional procedures and 1 laparoscopic surgery), 3 conventional cephalic pancreaticoduodenectomies, 2 conventional central pancreatectomies and one spleen-preserving distal pancreatectomy. No deaths were reported within 90 days of surgery, and overall survival and disease-free survival were 58 and 53 months, respectively. Conclusion: Resection of pancreatic metastases is safe and provides good oncologic outcomes and overall survival when performed with a multidisciplinary approach in centers with a high volume of hepatobiliary and pancreatic surgeries and in selected cases.

Liver transplantation for end-stage hepatic alveolar echinococcosis / 器官移植

Hepatic alveolar echinococcosis (HAE) is a common zoonotic endemic parasitic disease in western China. It lacks of typical clinical manifestations in the early stage, and symptoms become prominent during the end stage, with an alarmingly high mortality rate. Among the treatment of end-stage HAE (es-HAE), orthotopic liver transplantation is almost the only radical treatment due to insufficient remnant liver volume, uncontrollable bleeding and difficulty in vascular reconstruction in vivo. However, the shortage of donor liver and long-term postoperative use of immunosuppressants limit its application. The introduction of ex vivo liver resection and autotransplantation (ELRA) resolves this dilemma and significantly broadens the indications of es-HAE. In addition, multiple centers in China have optimized and modified ELRA to further improve the treatment system of es-HAE. At present, liver transplantation (including ELRA) of es-HAE remains a hot topic for clinicians. In this article, orthotopic liver transplantation, ELRA, auxiliary ELRA and other surgical treatment of es-HAE were reviewed, aiming to further enhance the diagnosis and treatment of es-HAE and improve clinical prognosis of the patients.

Establishment of a Predictive Model for Chronic Cough after Pulmonary Resection / 中国肺癌杂志

BACKGROUND@#Chronic cough after pulmonary resection is one of the most common complications, which seriously affects the quality of life of patients after surgery. Therefore, the aim of this study is to explore the risk factors of chronic cough after pulmonary resection and construct a prediction model.@*METHODS@#The clinical data and postoperative cough of 499 patients who underwent pneumonectomy or pulmonary resection in The First Affiliated Hospital of University of Science and Technology of China from January 2021 to June 2023 were retrospectively analyzed. The patients were randomly divided into training set (n=348) and validation set (n=151) according to the principle of 7:3 randomization. According to whether the patients in the training set had chronic cough after surgery, they were divided into cough group and non-cough group. The Mandarin Chinese version of Leicester cough questionnare (LCQ-MC) was used to assess the severity of cough and its impact on patients' quality of life before and after surgery. The visual analog scale (VAS) and the self-designed numerical rating scale (NRS) were used to evaluate the postoperative chronic cough. Univariate and multivariate Logistic regression analysis were used to analyze the independent risk factors and construct a model. Receiver operator characteristic (ROC) curve was used to evaluate the discrimination of the model, and calibration curve was used to evaluate the consistency of the model. The clinical application value of the model was evaluated by decision curve analysis (DCA).@*RESULTS@#Multivariate Logistic analysis screened out that preoperative forced expiratory volume in the first second/forced vital capacity (FEV1/FVC), surgical procedure, upper mediastinal lymph node dissection, subcarinal lymph node dissection, and postoperative closed thoracic drainage time were independent risk factors for postoperative chronic cough. Based on the results of multivariate analysis, a Nomogram prediction model was constructed. The area under the ROC curve was 0.954 (95%CI: 0.930-0.978), and the cut-off value corresponding to the maximum Youden index was 0.171, with a sensitivity of 94.7% and a specificity of 86.6%. With a Bootstrap sample of 1000 times, the predicted risk of chronic cough after pulmonary resection by the calibration curve was highly consistent with the actual risk. DCA showed that when the preprobability of the prediction model probability was between 0.1 and 0.9, patients showed a positive net benefit.@*CONCLUSIONS@#Chronic cough after pulmonary resection seriously affects the quality of life of patients. The visual presentation form of the Nomogram is helpful to accurately predict chronic cough after pulmonary resection and provide support for clinical decision-making.

Pelvic Diameter is not Associated with Positive Circumferential Resection Margin in Rectal Cancer: Retrospective Analysis of 78 Cases

Abstract Objective To identify if there is an association between pelvic entry and pelvic outlet diameters with increased positive circumferential resection margin (CRM) in rectal cancer. Introduction Positive CRMin rectalcancerisa majorpredictor forlocal anddistant recurrence. Pelvic diameters may be related to the difficulty of dissection, as well as intrinsic tumor characteristics such as tumor size, location, distance from the anal margin, and T stage, which may compromise the integrity of the mesorectum and circumferential margin involvement. Methods A retrospective review of the patient's medical records who underwent surgical resection of rectal adenocarcinoma from January 2012 to June 2022 was performed. The patient's preoperative staging, operative characteristics, and histopathologic outcomes were gathered from the medical records. Preoperative MRI scanning was done in all patients. MRI pelvimetry was done by two observers. CRM involvement was recorded as stated in the pathology report. Pelvimetry variables were dichotomized according to their mean values for correlation analysis. The odds ratio (OR) was calculated from a binary logistics regression model to assess the relation between the positive CRM and the independent variables. Results A total of 78 patients were included in this study. A positive CRM was reported in 10 patients (12.8%). BMI >27.4 + 6.6 (p = 0.02), positive extramural vascular invasion (p = 0.027), positive CRM by MRI scanning (p = 0.004), and anal sphincter involvement (p = 0.03) were associated with positive CRM. Pelvimetry values were not associated with a positive CRM. Conclusion No association was found between the pelvic diameters measured by MRI pelvimetry with a positive CRM.

Increased risk of bladder cancer recurrence due to bacillus Calmette-Guérin shortage in Brazil

SUMMARY OBJECTIVE: Our study aimed to evaluate the impact of bacillus Calmette-Guérin shortage on recurrence and progression in patients with non-muscle invasive bladder cancer in a Brazilian cohort. METHODS: We retrospectively reviewed the clinicopathological data of 409 patients who had their first transurethral resection of the bladder tumor for intermediate or high-risk non-muscle invasive bladder cancer between June 2014 and May 2021 in a tertiary public hospital in Brazil. Patients included had non-muscle-invasive urothelial carcinoma of the bladder resected completely for the first time, regardless of bacillus Calmette-Guérin use. Low-risk disease patients were excluded from the analysis. Demographic, clinicopathological, and bacillus Calmette-Guérin use data were collected from our database. Recurrence and progression data were obtained from patient records or through telephone interviews. Recurrence-free survival and progression-free survival were calculated from the date of transurethral resection of the bladder tumor until the events of recurrence, progression, last office visit, or phone interview. RESULTS: Within a median follow-up period of 26.7 months, 168 (41.1%) patients experienced a recurrence in a median time of 27 months (95%CI 16.1-38). Bacillus Calmette-Guérin was administered to 57 (13.9%) individuals after transurethral resection of the bladder tumor. Patients with ≥3 lesions (p<0.001), those with lesions >3 cm (p=0.02), and those without bacillus Calmette-Guérin treatment (p<0.001) had shorter recurrence-free survival. According to a Cox multivariate regression model, bacillus Calmette-Guérin use was independently associated with a reduced recurrence rate, with an HR of 0.43 (95%CI 0.25-0.72). Out of the patients studied, 26 (6.4%) experienced progression. T1 stage (p<0.001) and high-grade (p<0.001) were associated with shorter progression-free survival. Bacillus Calmette-Guérin did not influence bladder cancer progression. In the Cox multivariate analysis, high-risk disease was independently associated with progression (p<0.001). CONCLUSION: Our study confirms that non-muscle invasive bladder cancer exhibits a high recurrence rate. The use of adjuvant bacillus Calmette-Guérin in intermediate and high-risk patients significantly reduces this rate. Furthermore, the bacillus Calmette-Guérin shortage could have negatively impacted these patients.

Isquemia mesentérica aguda: un desafío de la medicina. Reporte de un caso

La isquemia intestinal aguda es una emergencia vascular provocada por fenómenos oclusivos y no oclusivos de la circulación mesentérica arterial y venosa, de difícil diagnóstico y pronóstico ominoso. Su incidencia va en aumento paulatino con el decurso de los años, asociada fundamentalmente al envejecimiento de la población. La tasa de mortalidad es elevada a pesar de los avances en el campo de la imagenología. Suele diagnosticarse de forma tardía, cuando está establecido el daño isquémico intestinal de carácter irreversible. El elemento imprescindible e indispensable lo constituye el tiempo que trascurre hasta la cirugía, por lo que su diagnóstico sigue siendo un reto clínico. El tratamiento exige medidas médicas intensivas, al igual que cirugía de revascularización y resección del intestino necrosado. Por desdicha, el examen físico y los hallazgos de laboratorio no son sensibles ni específicos para su diagnóstico. Teniendo en cuenta estos elementos, se presenta el caso de una paciente de 38 años con clínica difusa de vómitos, diarrea y dolor abdominal progresivo, que requirió intervención quirúrgica de urgencia con diagnóstico transoperatorio de isquemia mesentérica aguda. Durante su estancia hospitalaria se relaparotomizó en dos ocasiones, mantuvo soporte ventilatorio e inotrópico por fallo multiorgánico en la Unidad de Cuidados Intensivos, mostrando una adecuada evolución posquirúrgica. El objetivo de esta presentación es enfatizar en la clínica como elemento fundamental para abordar de forma correcta esta entidad en un medio hospitalario de limitados recursos diagnósticos imagenológicos, al abordar conceptos teóricos recientes y facilitar una adecuada actuación en la toma de decisiones.

Acute intestinal ischemia is a vascular emergency caused by occlusive and non-occlusive phenomena of the mesenteric arterial and venous circulation of difficult diagnosis and ominous prognosis. Its incidence is gradually increasing over the years, mainly associated with the ageing of the population. The mortality rate is high despite advances in the field of imaging. It is usually diagnosed late, when irreversible ischemic intestinal damage is established. The essential and indispensable element is the time that elapses until surgery, so its diagnosis continues to be a clinical challenge. Treatment requires intensive medical measures, as well as revascularization surgery and resection of the necrotic intestine. Unfortunately, physical examination and laboratory findings are neither sensitive nor specific for its diagnosis. Taking these elements into account, the authors present the case of a 38-year-old female patient with diffuse symptoms of vomiting, diarrhea and progressive abdominal pain that required emergency surgery with intraoperative diagnosis of acute mesenteric ischemia. During her hospital stay, she underwent re-laparotomy twice, maintained ventilatory and inotropic support due to multi-organ failure in the Intensive Care Unit, showing an adequate post-surgical evolution. The objective of this presentation is to emphasize in the clinic as a fundamental element to correctly address this entity in a hospital environment with limited imaging diagnostic resources by addressing recent theoretical concepts and facilitating adequate action in decision-making.

Polipectomia a frio: um procedimento seguro para remover pequenas lesões colorretais não pediculadas / Cold snare polypectomy: a safe procedure for removing small non-pedunculated colorectal lesions

ABSTRACT Background: Polypectomy is an important treatment option for preventing colorectal cancer. Incomplete polyp resection (IPR) is re­cognized as a risk factor for interval cancer. Objective: The primary objective was to evaluate the complete polyp resection (CPR) rate for cold snare polypectomy (CSP) in small non-pedunculated polyps and, secondarily, specimen retrieval and complication rates. Methods: We prospectively evaluated 479 polyps <10 mm removed by CSP in 276 patients by an inexperienced endoscopist. Results: A total of 476 polyps (99.4%) were resected en bloc. A negative margin (classified as CPR) was observed in 435 polyps (90.8%). An unclear or positive margin (classified as IPR) was observed in 43 cases (9.0%) and 1 case (0.2%), respectively, for an overall IPR rate of 9.2% (44/479). The IPR rate was 12.2% in the first half of cases and 5.9% in the second half (P=0.02). Dividing into tertiles, the IPR rate was 15.0% in the first tertile, 6.9% in the second tertile, and 5.7% in the third tertile (P=0.01). Dividing into quartiles, the IPR rate was 15.8% in the first quartile and 5.9% in the fourth quartile (P=0.03). The IPR rate was 6.3% for type 0-IIa lesions and 14.1% for type 0-Is lesions (P=0.01). For serrated and adenomatous lesions, the IPR rate was 9.2%. Specimen retrieval failed in 3.6% of cases. Immediate bleeding (>30 s) occurred in 1 case (0.2%), treated with argon plasma coagulation. No delayed bleeding or perforation occurred. Conclusion: CSP is a safe technique that provides good results for the resection of small non-pedunculated polyps, with a short learning curve.

RESUMO Contexto: A polipectomia é uma importante opção terapêutica na prevenção do câncer colorretal (CCR). A ressecção incompleta do pólipo (RIP) é reconhecida como fator de risco para o câncer de intervalo. Objetivo: O principal objetivo foi avaliar o índice de ressecção completa da polipectomia a frio (PF) em pequenos pólipos não pediculados e, secundariamente, a recuperação do espécime e índice de complicações. Métodos: Avaliamos prospectivamente 479 pólipos <10 mm removidos por PF em 276 pacientes, por um endoscopista sem experiência com este método. Resultados: Foram ressecados em bloco 476 pólipos (99,4%). Tivemos margem negativa, considerada ressecção completa do pólipo (RCP), em 435 (90,8%) casos. Margem indefinida ou positiva (classificada como RIP) foi observada em 43 (9,0%) casos e em 1 (0,2%) caso, respectivamente, com um índice global de RIP de 9,2% (44/479). O índice de RIP foi de 12,5% na primeira metade dos casos e 5,9% na última metade (P=0,02). Dividindo em tercis, o índice de RIP foi de 15,0% no primeiro terço, 6,9% no segundo terço e 5,7% no terceiro quarto, P=0,01. Dividindo em quartis, o índice de RIP foi de 15,8% no primeiro quarto, enquanto o último quarto foi de 5,9%, P=0,03. O índice de RIP foi de 6,3% para lesões tipo 0-IIa e de 14,1% para lesões tipo 0-Is, P=0,01. O índice de RIP foi de 9,2% para lesões serrilhadas e adenomatosas. Houve falha na recuperação dos espécimes em 3,6% dos casos. Sangramento imediato (>30 s) ocorreu em um caso (0,2%), controlado com plasma de argônio. Sem sangramento tardio e perfuração. Conclusão: PF é uma técnica segura que apresenta bons resultados para a ressecção de pequenas lesões não pediculadas, com uma curta curva aprendizado.

Predictors of early catheter replacement after HoLEP. Results from a high-volume laser center

ABSTRACT Introduction: The aim of the study was to investigate clinical and surgical factors associated with early catheter replacement in patients treated with Holmium Laser Enucleation of the Prostate (HoLEP). Materials and Methods: Data of patients treated with HoLEP at our Institution by a single surgeon from March 2017 to January 2021 were collected. Preoperative variables, including non-invasive uroflowmetry and abdominal ultrasonography (US), were recorded. Bladder wall modifications (BWM) at preoperative US were defined as the presence of single or multiple bladder diverticula or bladder wall thickening ≥5 mm. Clinical symptoms were assessed using validated questionnaires. Only events occurred within the first week after catheter removal were considered. Results: Overall, 305 patients were included, of which 46 (15.1%) experienced early catheter replacement. Maintenance of anticoagulants/antiplatelets (AC/AP) therapy at surgery (p=0.001), indwelling urinary catheter (p=0.02) and the presence of BWM (p=0.001) were more frequently reported in patients needing postoperative re-catheterization. Intraoperative complications (p=0.02) and median lasing time (p=0.02) were significantly higher in this group. At univariate analysis, indwelling urinary catheter (p=0.02), BWM (p=0.01), ongoing AC/AP therapy (p=0.01) and intraoperative complications (p=0.01) were significantly associated with early catheter replacement. At multivariate analysis, indwelling urinary catheter (OR: 1.28; p=0.02), BWM (OR: 2.87; p=0.001), and AC/AP therapy (OR: 2.21; p=0.01) were confirmed as independent predictors of catheter replacement. Conclusions: In our experience the presence of indwelling urinary catheter before surgery, BWM and the maintenance of AC/AP therapy were shown to be independent predictors of early catheter replacement after HoLEP.

Infantile (congenital) anaplastic intracranial solitary fibrous tumor/hemangiopericytoma—A case report with brief literature review

Solitary fibrous tumor/hemangiopericytoma (SFT/HPC) is a rare primary central nervous system (CNS) tumor, included in the World Health Organization (WHO) 2016 classification. Very few cases have been described in the literature so far, especially the infantile type. It is a mesenchymal tumor of the fibroblastic type, characterized by the fusion of NAB 2 and STAT 6 genes. A 10-month-old boy presented to our neurosurgery department with complaints of increasing head circumference since 1 month of age. The magnetic resonance imaging (MRI) showed a space-occupying lesion measuring 8.2 cm × 7 cm × 6.9 cm in the fronto-temporo-parietal region with a clinical diagnosis of glioma/atypical teratoid rhabdoid tumor (ATRT). The microscopy revealed a spindle cell tumor arranged in a patternless pattern with variable cellularity, increased mitosis, and areas of coagulative necrosis. The immunohistochemistry showed vimentin, CD 34, STAT6, CD99 positivity whereas Glial fibrillary acidic protein, Epithelial membrane antigen, and S-100 negativity. Hence, a diagnosis of anaplastic SFT/HPC (grade-III) was rendered. The patient improved after gross total resection (GTR). The primary intracranial congenital SFT/HPC are extremely rare, often a clinico-radiologically misdiagnosed entity. Thus, the immunohistochemistry/molecular study in addition to histology is mandatory for accurate diagnosis.

Tratamiento multimodal en los schwanomas vestibulares grandes / Multimodal Treatment for Large Vestibular Schwannomas

Introducción: Los schwanomas vestibulares son lesiones clasificadas como grado I por la Organización Mundial de la Salud. Las opciones conductuales incluyen la observación, la radiocirugía o la resección microquirúrgica endoscópica. Objetivo: Describir el rol del tratamiento multimodal en los schwanomas vestibulares. Métodos: Se realizó una búsqueda sistemática de literatura médica para la identificación e inclusión de artículos en las siguientes bases de datos: PubMed/Medline, SciELO y Google Scholar, además de los servidores de preprints BioRvix y MedRvix. Se usaron los siguientes descriptores: vestibular schwanoma OR acoustic neuroma AND nerve centered approach OR combined approach AND partial resection OR subtotal resection OR near total resection. Se excluyeron editoriales, cartas al editor, libros, revisiones, metaanálisis y aquellos artículos con método deficiente de más de 20 años de publicación o sin mención al tema de interés. Fueron incluidos 16 artículos. Desarrollo: Los artículos incluyeron un total de 699 pacientes, de los cuales solo 228 (32,6 porciento) recibieron radioterapia en el período posoperatorio. El período de seguimiento promedió 49,6 meses. La preservación de la función facial se logró en el 88,3 porciento de los casos y el control tumoral en el 80,7 porciento. El estado de la preservación auditiva solo fue informado en el 50 porciento de los estudios. El uso de la radioterapia adyuvante mostró gran variabilidad. Conclusiones: El tratamiento multimodal para los schwanomas vestibulares grandes -compuesto por la resección subtotal, vaciamiento intratumoral, seguido de radiocirugía- se ha convertido en una opción plausible. Se necesita la publicación de mayor cantidad de reportes para ofrecer recomendaciones y estratificar la conducta(AU)

Introduction: Vestibular schwannomas are lesions classified as grade I by the World Health Organization. Behavioral options include observation, radiosurgery or endoscopic microsurgical resection. Objective: To describe the role of multimodal treatment for vestibular schwannomas. Methods: A systematic search of medical literature, for the identification and inclusion of articles, was carried out in the databases PubMed/Medline, SciELO and Google Scholar, as well as in the preprint servers BioRvix and MedRvix. The following descriptors were used: vestibular schwannoma OR acoustic neuroma AND nerve centered approach OR combined approach AND partial resection OR subtotal resection OR near total resection. Editorials, letters to the editor, books, reviews and metaanalyses were excluded, as well as articles with deficient method of more than 20 years of publication or not mentioning the topic of interest. Sixteen articles were included. Development: The articles included a total of 699 patients, of which only 228 (32.6 ) received radiotherapy in the postoperative period. The average follow-up period was 49.6 months. Preservation of facial function was achieved in 88.3 percent of cases; and tumor control, in 80.7 percent. Hearing preservation status was reported in only 50 percent of the studies. The usage of adjuvant radiotherapy showed great variability. Conclusions: Multimodal treatment for large vestibular schwannomas -composed of subtotal resection and intratumoral draining, followed by radiosurgery- has become a plausible option. The publication of a greater amount of reports is necessary to provide recommendations and stratify the behavior(AU)

Oncological outcomes of visibly complete transurethral resection prior to neoadjuvant chemotherapy for bladder cancer

ABSTRACT Purpose: To evaluate the potential oncologic benefit of a visibly complete transurethral resection of a bladder tumor (TURBT) prior to neoadjuvant chemotherapy (NAC) and radical cystectomy (RC). Materials and Methods: We identified patients who received NAC and RC between 2011-2021. Records were reviewed to assess TURBT completeness. The primary outcome was pathologic downstaging (<ypT2N0), with complete pathologic response (ypT0N0) and survival as secondary endpoints. Logistic regression and Cox proportional hazards models were utilized. Results: We identified 153 patients, including 116 (76%) with a complete TURBT. Sixty-four (42%) achieved <ypT2N0 and 43 (28%) achieved ypT0N0. When comparing those with and without a complete TURBT, there was no significant difference in the proportion with <ypT2N0 (43% vs 38%, P=0.57) or ypT0N0 (28% vs 27%, P=0.87). After median follow-up of 3.6 years (IQR 1.5-5.1), 86 patients died, 37 died from bladder cancer, and 61 had recurrence. We did not observe a statistically significant association of complete TURBT with cancer-specific or recurrence-free survival (p≥0.20), although the hazard of death from any cause was significantly higher among those with incomplete TURBT even after adjusting for ECOG and pathologic T stage, HR 1.77 (95% CI 1.04-3.00, P=.034). Conclusions: A visibly complete TURBT was not associated with pathologic downstaging, cancer-specific or recurrence-free survival following NAC and RC. These data do not support the need for repeat TURBT to achieve a visibly complete resection if NAC and RC are planned.

Long-term outcomes of single monocular resection–recession in adult sensory strabismus and factors affecting the postoperative drift

Purpose: The purpose of our study was to analyze the clinical characteristics and outcome of horizontal strabismus surgery in patients having sensory strabismus and to analyze the factors that affect the postoperative drift in these patients over a follow?up of three years. Methods: This was a retrospective case series. Patients aged ?18 years, having low vision (visual acuity ?20/60) in one eye, and undergoing horizontal strabismus surgery (standard recess–resect procedures) in the same eye were recruited. All patients were advised patching of the good eye six weeks prior and continued for six weeks post strabismus surgery. We excluded patients who had paralytic disorders, motility defects, or those with chronic systemic conditions. Patients with a minimum follow?up of three years were recruited. Results: The study included 56 patients whose mean age was 22.9 ± 4.93 years. Exotropia (n = 38; 67.8%) was more common than esotropia (n = 18; 32.1%). Preoperative visual acuity was 1.1 ± 0.85 (range perception of light to 6/18p). The cause of low vision was amblyopia (n = 30; 53.5%) followed by trauma (n = 22; 39.2%). The mean preoperative distance deviation was 57.7 ± 15.5 PD in the primary position (range: 20–65 PD). The success rate of exotropia (78.9%) was more than esotropia (52.9%) at three years. Two patients with esotropia were overcorrected. All patients with exotropia showed an exotropic drift with time. Conclusion: The motor alignment after a single recession– resection procedure was satisfactory at the long?term in our cohort of sensory strabismus. The duration or extent of visual impairment had no relation to the postoperative outcome.

Prognostic roles and survival benefits of endoscopic resection versus surgical resection in the management of malignant colon polyps

Background: Due to few sufficient data regarding the comparison between endoscopic and surgical resection of malignant colorectal polyps regarding outcomes and survival benefits, there are no clear guidelines of management strategies of malignant colorectal polyps. The aims of the present study were to compare endoscopic resection alone and surgical resection in patients with malignant polyps in the colon (T1N0M0) readings advantages, disadvantages, recurrence risks, survival benefits, and long-term prognosis to detect how management strategy affects outcome. Patients and methods: we included 350 patients. All included patients were divided into 2 groups; the first group included 100 patients who underwent only endoscopic polypectomy and the second group included 250 patients who underwent endoscopic polypectomy followed by definitive surgical resection after histopathological diagnosis. We followed all patients for about 5 years, ranging from 18 to 55 months. The primarily evaluated parameters are surgical consequences and patients' morbidity. The secondary evaluated parameters are recurrence risks, recurrence free survival, and overall survival rates. Results: The age of patients who underwent polypectomy is usually younger than the surgical group, males have more liability to polypectomy in comparison with females. Patients with tumors in the left colon have more liability to polypectomy in comparison with the right colon (p< 0.0001). Tumor factors associated with more liability to surgical resection are presence of lymphovascular invasion, high grade, and poor tumor differentiation (p< 0.0001). The management strategy was the most significant predictor of overall and recurrence free survival rates in patients with malignant colon polyps (p< 0.001). Conclusions: We found that survival benefits and lower incidence of recurrence are detected in the surgical resection group more than in the polypectomy group. (AU)

Ghost ileostomy release down: our initial experience

Background: Many publications describe the advantages of the creation of ghost ileostomy (GI) to prevent the need for formal covering ileostomy in more than 80% of carcinoma rectum patients. However, none of the papers describes exactly how to ultimately remove the GI in these 80% of patients in whom it doesn't need formal maturation. Aim: To describe and evaluate the ghost ileostomy release down (GIRD) technique in terms of feasibility, complications, hospital stay, procedure time etc. in patients with low anterior resection/ultra-low anterior resection (LAR/uLAR) with GI for carcinoma rectum. Method: The present was a prospective cohort study of patients with restorative colorectal resections with GI for carcinoma rectum, Postoperatively the patients were studied with respect to ease and feasibility of the release down of GI and its complications. The data was collected, analyzed and inference drawn. Results: A total of 26 patients needed the GIRD and were included in the final statistical analysis of the study. The procedure was done between 7th to 16th postoperative days (POD) and was successful in all patients without the need of any additional surgical procedure. None of the patients required any local anesthetic injection or any extra analgesics. The average time taken for procedure was 5-minutes and none of the patients had any significant difficulty in GI release. There were no immediate postprocedure complications. Conclusion: The GIRD technique is a simple, safe, and quick procedure done around the 10th POD that can easily be performed by the bedside of patient without the need of any anesthesia or additional analgesics. (AU)

Risk factors and outcomes of occurrence of anastomotic leakage and reoperations for its management after colorectal surgery

Background: Anastomotic leakage (AL) is still the most annoying postsurgery complication after colorectal resection due to its serious complications up to death. Limited data were available regarding differences in AL incidence, management, and consequences for different types of colorectal resection. The aim of the present work was to evaluate differences in incidence of AL, incidence of postoperative complications, and length of hospital stay in a large number of patients who underwent elective colorectal resection for management of colorectal lesions. In addition to detect when and what type of reoperation for management of AL occur after colorectal resection. Patients: All 250 included patients underwent elective surgeries for colorectal resection with performance of primary anastomosis for management of colorectal neoplastic and non-neoplastic diseases in the period between May 2016 and July 31, 2021. We followed the patients for 90 days; we registered the follow-up findings. Results: the rates of AL occurrence were variable after the different procedures. The lowest rate of AL occurrence was found in patients who underwent right hemicolectomy, then in patients who underwent sigmoidectomy, left hemicolectomy, transversectomy and anterior resection (p= 0.004). A stoma was frequently performed during reoperation (79.5%) which was significantly different between different procedures: 65.5% in right hemicolectomy, 75.0% in transversectomy, 85.7% in left hemicolectomy, and 93.0% in sigmoid resection (p< 0.001). Conclusion Rates, types, time of occurrence and severity of AL vary according to the type of colectomy performed and selective construction of stoma during AL reoperation is currently safely applied with comparable mortality rates for patients who did and who did not have a stoma after reoperation. (AU)

Reconstruction Plate Fracture: Mechanism and Recent Advances

Reconstruction plates with or without bone grafts are used to restore mandibular continuity, form and function following segmental resection of mandible. Fracture of reconstruction plate is observed in 2.9 % to 10% of cases reported in the literature excluding other complications. In this case, we report the fracture of stainless steel reconstruction plate used without bone graft and its management using locking reconstruction plate with non vascularised iliac crest graft following removal of the fractured plate. Review of literature describing incidence, pattern and causes of reconstruction plate fracture and its management is discussed.

Obturator Nerve Block by Inguinal Approach in the Transurethral Resection of Lateral wall Bladder Tumor

Background: Single spinal anesthetic has been shown to be ineffective in preventing obturator nerve activation and adductor muscle contraction, which can lead to problems such as bladder perforation during transurethral resection of lateral wall bladder tumor (TURBT) under SA. To counteract this, numerous additional approaches are still being investigated, with the inguinal approach lately gaining traction. The aim of the study was to observe the incidence of jerk/ muscle spasm after obturator nerve block by Inguinal Approach in TURBT of lateral wall urinary bladder tumor under SA. Material & Methods: This retrospective observational study was conducted at the Department of Anesthesiology & ICU of National Institute of Kidney Diseases & Urology, Dhaka, Bangladesh. The study duration was 6 months, from January 2022 to July 2022. During this period, a total of 20 cases of transurethral resection of lateral wall bladder tumor (TURBT) had been included as the study population, following inclusion and exclusion criteria. Results: Among the participants, 45% had been from the age group of 60-69 years, 30% had been from the age group of 50-59 years, 15% had been between the ages of 70-79, and 10% had been of 80 years or older. Hypertension was the most common comorbidity, observed in 70% of the participants. 45% had diabetes, 15% had chronic kidney disease, another 15% had chronic obstructive pulmonary disease, 10% had heart disease, and 15% had benign enlargement of prostate. During TURBT, majority of the patients had no jerk, while only 10% had minimal jerk and 1 patient had maximum jerk. During the 24-hour follow-up, 20% of patients regarded their outcome condition as excellent, while 60% had regraded their outcome as good. Only 1 patient regarded their outcome as poor, while follow-up data was unavailable for 15% of patients. Conclusion: The study observed very few incidence of muscle spasm or jerk during TURBT after using the inguinal approach. The study also found positive short-term outcome in most of the patients.

A case report of primary extubation by partial cricotracheal resection for severe subglottic stenosis / 临床耳鼻咽喉头颈外科杂志

This patient suffered from severe subglottic stenosis(grade Ⅳb). During partial cricotracheal resection, we cut through the cricothyroid membrane and the cricoid arch along the line from the lower edge of the thyroid cartilage to 5 mm of the inferior thyroid cartilage corner anteromedially. This can protect the cricothyroid joint, effectively protect the recurrent laryngeal nerve, and also support the airway. Strictly adhere to airway separation, avoid excessive separation of scars, and combine with reasonable postoperative management to achieve a safe extubation.

Second-generation laryngeal mask airway as an alternative to endotracheal tube in prolonged laparoscopic abdominal surgery: a comparative analysis of intraoperative gas exchanges

INTRODUCTION@#Laryngeal mask airway (LMA), which is used in difficult airway maintenance conditions during emergencies, is rarely used in prolonged surgery despite its advantages over endotracheal tube (ETT). In this study, we conducted a comparative analysis of intraoperative gas exchanges between second-generation LMA and ETT during prolonged laparoscopic abdominal surgery.@*METHODS@#Prolonged surgery was defined as a surgery lasting more than 2 h. In total, 394 patients who underwent laparoscopic liver resection via either second-generation LMA or ETT were retrospectively analysed. The following parameters were compared between the two groups of patients: end-tidal pressure of carbon dioxide (ETCO2), tidal volume (TV), respiratory rate (RR), peak inspiratory pressure (PIP), arterial partial pressure of carbon dioxide (PaCO2), pH and ratio of arterial partial pressure of oxygen to fractional inspired oxygen (PFR) during surgery. In addition, the incidence of postoperative pulmonary complications (PPCs), including pulmonary aspiration, was compared.@*RESULTS@#The values of ETCO2, TV, RR and PIP during pneumoperitoneum were comparable between the two groups. Although PaCO2 at 2 h after induction was higher in patients in the LMA group (40.5 vs. 38.5 mmHg, P < 0.001), the pH and PFR values of the two groups were comparable. The incidence of PPC was similar.@*CONCLUSION@#During prolonged laparoscopic abdominal surgery, second-generation LMA facilitates adequate intraoperative gas exchange and may serve as an alternative to ETT.