Esophageal superficial adenosquamous carcinoma resected by endoscopic submucosal dissection: A rare case report.

Background: Adenosquamous carcinoma (ASC), which is comprised of squamous cell carcinoma (SCC) and adenocarcinoma elements, is a rare histological type of esophageal carcinoma. Few reports have focused on the endoscopic findings and the effectiveness of the endoscopic treatment of early ASC.

Case Summary: A 77-year-old man underwent esophagogastroduodenoscopy for heartburn.