Endoscopic submucosal dissection for a symptomatic hypopharyngeal cavernous hemangioma: a new potential method - Huo, Xu-Cheng; Song, Bao-Hui; Luo, Rong-Kui; Zhong, Yun-Shi; Zhou, Ping-Hong; Zhou, Xu; Cai, Ming-Yan (Endoscopy, 2025)