Endoscopic submucosal dissection of a solitary gastric plasmacytoma: "third space oddity".

Endoscopic evaluation 1 month after radiotherapy, administered with curative intent (40 Gy), suggested a non-responding lesion (Fig. Lesion delineation was obtained using narrow-band imaging (NBI) and texture and color enhancement imaging. 3 Endoscopic image showing subepithelial antral lesion 1 month after completion of radiotherapy (20 × 2 Gy). [Extracted from the article]