Abstract
Abstract Background Primary mediastinal cysts are infrequent lesions derived from a variety of mediastinal organs or structures. Complete surgical resection is the treatment of choice even in asymptomatic patients to prevent severe adverse events (AEs) and establish the diagnosis. Transesophageal endoscopic resection of benign mediastinal tumors has been proven feasible. The aim of this study is to evaluate the feasibility, safety and efficacy of transesophageal endoscopic surgery for mediastinal cysts. Methods From January 2016 to May 2021, patients with mediastinal cysts who underwent transesophageal endoscopic resection were retrospectively included. Clinicopathological characteristics, procedure-related parameters, AEs, and follow-up outcomes were analyzed. Results A total of 10 patients with mediastinal cysts were included in this study. The mean cyst size was 3.3±1.3 cm. Histopathology revealed 3 bronchogenic cysts (30.0%), 4 esophageal duplication cysts (40.0%), 2 gastroenteric cysts (20.0%), and 1 lymphatic cyst (10.0%). All procedures were performed uneventfully. En bloc resection was achieved in 6 patients (60.0%). Aggressive resection was avoided to prevent damage to the surrounding vital organs. Mean procedure time was 63.4±36.5 min. No major pneumothorax, bleeding, mucosal injury or fistula occurred. One patient had a transient febrile episode (>38.5 °C). Mean postoperative hospital stay was 2.7±0.9 days. No residual or recurrent lesions were observed in any patient during a mean follow-up period of 29.8±19.5 months. Conclusions Transesophageal endoscopic surgery appears to be a feasible, safe, effective and much less invasive approach for mediastinal cyst resection. Larger prospective studies are required to fully assess the efficacy and safety of this novel technique.
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