Magnifying endoscopy with narrow-band imaging and salvage endoscopic submucosal dissection of a locally advanced rectal adenocarcinoma after neoadjuvant chemoradiotherapy.

Abstract

A 61-year-old man underwent colonoscopy because of bloody stools. Colonoscopy showed an elevated lesion of 25 × 15 mm about 3 cm from the anus ([Fig. 1 a]). Histological examination of the biopsy indicated that this was an adenocarcinoma. Endoscopic ultrasound (EUS) showed that the lesion was involving the muscularis propria. Computed tomography (CT) and rectal magnetic resonance imaging (MRI) resulted in a staging classification of T2N0M0.