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  • Title: Submucosal Tunneling Endoscopic Resection for Large and Irregular Submucosal Tumors Originating from Muscularis Propria Layer in Upper Gastrointestinal Tract.
    Author: Song S, Feng M, Zhou H, Liu M, Sun M.
    Journal: J Laparoendosc Adv Surg Tech A; 2018 Nov; 28(11):1364-1370. PubMed ID: 30256158.
    Abstract:
    BACKGROUND: The majority of submucosal tumors (SMTs) are benign. However, large SMTs with irregular outer shapes are proved to harbor a higher risk for malignancy. Submucosal tunneling endoscopic resection (STER) has emerged as a feasible technique for resecting SMTs. OBJECTIVE: To evaluate the safety and efficacy of STER for large and irregular SMTs with a diameter no <35 mm originating from the muscularis propria layer, and to share the technical skills of STER for complete and en bloc resection. PATIENTS AND METHODS: We retrospectively reported 10 cases in which the new technique of STER was performed to remove large and irregular SMTs with a diameter no <35 mm of upper gastrointestinal tract in our hospital between April 2014 and April 2017. RESULTS: All 10 (100%) patients underwent STER successfully, with a mean operation time of 156 minutes. Among the 10 SMTs, 3 (30%) were located in the esophagus, 7 (70%) were in the cardia. All the SMTs had a maximum diameter no <35 mm, ranging from 35 to 100 mm. The mean size was 57.2 mm. En bloc resection was achieved in 8 (80%) of the tumors. Only two (20%) of the SMTs were resected into more than one piece. Complication occurred in 1 (10%) of the patients as a representation of pneumothorax. No recurrence was noted during a median follow-up of 15 months. CONCLUSION: In this retrospective study, STER may be an effective and safe technique resecting large and irregular SMTs with a diameter no >40 mm in transverse diameter and no >100 mm in longitudinal diameter.
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