Mucosal protrusion angle measured on capsule endoscopy for the diagnosis of small bowel submucosal tumors: a preliminary exploration of diagnostic accuracy based on a case series

ORIGINAL PAPER General surgery MPA measured on capsule endoscopy for SBSTs 269Small -bowel capsule endoscopy (SBCE) has significantly enhanced the detection of small intestinal lesions and is now a first -line tool for evaluating obscure bleeding or suspected submucosal protrusions.Studies report that SBCE identifies SBSTs in up to 8.9% of indicated cases, with a markedly lower miss rate, as compared with conventional imaging or double -balloon enteroscopy.6-8 However, a key diagnostic challenge lies in accurately differentiating true SBSTs from innocent bulges (benign elevations caused by intestinal looping or extrinsic compression).Both entities may appear on SBCE as smooth, rounded, protruding lesions; in the absence of alarm features,