Echoendoscopy in Preoperative Evaluation of Esophageal Adenocarcinoma and Gastroesophageal Junction: Systematic Review and Meta-analysis.

Esophageal adenocarcinomas of the esophagus and esophagogastric junction constitute a global health problem, the incidence of which has increased in recent decades. It has a poor prognosis and a low 5-year survival rate. Its treatment is based on preoperative clinical staging, in which echoendoscopy plays an essential role.