BACKGROUND AND AIMS: The aim of this prospective study was to evaluate the feasibility of submucosal tunnelling endoscopic resection of esophageal tumours originating from the muscularis propria layer. METHODS: Fifteen patients with esophageal submucosal tumours originating from the muscularis propria layer underwent submucosal tunnelling endoscopic resection between August 2011 and February 2012. The key steps were: (1) creating a submucosal tunnel from 5 cm above the tumour between the submucosal and muscular layers with a hook knife or hybrid knife; (2) dissecting the tumour by the technique of endoscopic submucosal dissection; (3) closing the mucosal incision site with clips after the tumour was removed. RESULTS: Submucosal tunnelling endoscopic resection was successfully performed in all cases. The en bloc resection rate was 100%. The average tumour diameter was 1.8 cm (range 1.0-3.0 cm). During the procedure, perforation occurred in 3 patients, who recovered after conservative treatment. No residual tumour or tumour recurrence was detected during the follow-up period (mean: 3.5 months, range: 1-9 months). Pathological diagnoses of these tumours were leiomyomas (12/15) and gastrointestinal stromal tumours (3/15). CONCLUSIONS: Submucosal tunnelling endoscopic resection is a feasible method for the treatment of small esophageal submucosal tumours originating from the muscularis propria layer.
BACKGROUND AND AIMS: The aim of this prospective study was to evaluate the feasibility of submucosal tunnelling endoscopic resection of esophageal tumours originating from the muscularis propria layer. METHODS: Fifteen patients with esophageal submucosal tumours originating from the muscularis propria layer underwent submucosal tunnelling endoscopic resection between August 2011 and February 2012. The key steps were: (1) creating a submucosal tunnel from 5 cm above the tumour between the submucosal and muscular layers with a hook knife or hybrid knife; (2) dissecting the tumour by the technique of endoscopic submucosal dissection; (3) closing the mucosal incision site with clips after the tumour was removed. RESULTS: Submucosal tunnelling endoscopic resection was successfully performed in all cases. The en bloc resection rate was 100%. The average tumour diameter was 1.8 cm (range 1.0-3.0 cm). During the procedure, perforation occurred in 3 patients, who recovered after conservative treatment. No residual tumour or tumour recurrence was detected during the follow-up period (mean: 3.5 months, range: 1-9 months). Pathological diagnoses of these tumours were leiomyomas (12/15) and gastrointestinal stromal tumours (3/15). CONCLUSIONS: Submucosal tunnelling endoscopic resection is a feasible method for the treatment of small esophageal submucosal tumours originating from the muscularis propria layer.