Prognostic value and interobserver agreement of endoscopic ultrasonography for superficial squamous cell carcinoma of the esophagus: a prospective study.

Background And Aims: Submucosal invasion of superficial esophageal cancer (SEC) is related to the prognosis. We prospectively analyzed outcomes of SEC in patients staged by endoscopic ultrasonography (EUS).

Patients And Methods: We staged 31 endoscopically diagnosed SEC cases using a 20/15-MHz thin probe.