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Background: Results of thymectomy in patients with myasthenia gravis need to be reported in a standardized way to allow accurate comparison. Methods: A retrospective study was conducted of 107 patients with myasthenia gravis without thymoma. Patients were followed-up for more than 12 months after thoracoscopic thymectomy and analyzed according to Myasthenia Gravis Foundation of America Recommendations for Clinical Research Standards. Results: The study population was aged 8 to 60 years old and included 15 men (14%) and 92 women (86%). A right-side approach was used in 36 patients, and the remaining 71 patients had a left-side approach. Mortality was 0% and morbidity was 9.34%. The mean operative time was 90 ± 45 minutes. The histologic diagnosis of the resected thymus was hyperplasia (78.5%), atrophy (15%), and normal status (6.5%). The mean length of hospitalization was 2.3 days (range, 2 to 6 days). The mean follow-up was 36.4 months (range, 12 to 74 months). The rate of complete stable remission was 59.5% by the end of postoperative year 6. An earlier onset age and early operation were significantly associated with complete stable remission and pharmacologic remission. A comparison of right side versus left side approach showed similarities in mean operative time, mean length of hospitalization, histopathologic results, and remission rates. Conclusions: Outcomes of the thoracoscopic approach in myasthenia gravis without thymoma were similar to those provided by open surgery, with the acknowledged benefits of minimally invasive surgery and good patient acceptance. [Copyright &y& Elsevier]

Importance: Intrahepatic cholangiocarcinoma (ICC) is a primary cancer of the liver that is increasing in incidence, and the prognostic factors associated with outcome after surgery remain poorly defined., Objective: To combine clinicopathologic variables associated with overall survival after resection of ICC into a prediction nomogram., Design, Setting, and Participants: We performed an international multicenter study of 514 patients who underwent resection for ICC at 13 major hepatobiliary centers in the United States, Europe, and Asia from May 1, 1990, through December 31, 2011. Multivariate Cox proportional hazards regression modeling with backward selection using the Akaike information criteria was used to select variables for construction of the nomogram. Discrimination and calibration were performed using Kaplan-Meier curves and calibration plots., Interventions: Surgical resection of ICC at a participating hospital., Main Outcomes and Measures: Long-term survival, effect of potential prognostic factors, and performance of proposed nomogram., Results: Median patient age was 59.2 years, and 53.1% of the patients were male. Most patients (74.7%) had a solitary tumor, and median tumor size was 6.0 cm. Patients were treated with an extended hepatectomy (202 [39.3%]), a hemihepatectomy (180 [35.0%]), or a minor liver resection (<3 segments) (132 [25.7%]). Most patients underwent R0 resection (87.9%), and 35.7% of patients had N1 disease. Using the backward selection of clinically relevant variables, we found that age at diagnosis (hazard ratio [HR], 1.31; P < .001), tumor size (HR, 1.50; P < .001), multiple tumors (HR, 1.58; P < .001), cirrhosis (HR, 1.51; P = .08), lymph node metastasis (HR, 1.78; P = .01), and macrovascular invasion (HR, 2.10; P < .001) were selected as factors predictive of survival. On the basis of these factors, a nomogram was created to predict survival of ICC after resection. Discrimination using Kaplan-Meier curves, calibration curves, and bootstrap cross-validation revealed good predictive abilities (C index, 0.692)., Conclusions and Relevance: On the basis of an Eastern and Western experience, a nomogram was developed to predict overall survival after resection for ICC. Validation revealed good discrimination and calibration, suggesting clinical utility to improve individualized predictions of survival for patients undergoing resection of ICC.