Initial experience of endoscopic submucosal dissection in Brazil to treat early gastric and esophagheal cancer: a multi-institutional analysis.

Objective: This study aimed to evaluate the feasibility and clinicopathological characteristics of early gastric and esophageal cancers treated with endoscopic submucosal dissection (ESD) at five centers in Brazil.

Methods: Five centers in Brazil reported their initial experience with ESD. The cases reported had already been collected by each center before pooled analysis.