A Case of Esophageal Leiomyoma Resected After Selective Circular Myotomy in Submucosal Tunneling Endoscopic Resection

Submucosal tunneling endoscopic resection (STER) is one of the recommended treatment modalities in patients with subepithelial lesions (SEL). There is limited information in the literature about the applicability of STER in SEL originating from the deep muscularis propria (MP) layer. This report presents a case of SEL originating from the deep MP layer that underwent STER in which challenging dissection at the base of the lesion was facilitated by selective circular myotomy proximal to the lesion