Fig. 3From: Gastrointestinal stromal tumors of the small intestine: the challenge of diagnosis and the outcome of managementHistomicrographs of GIST. A, B The tumor is formed of spindle cell proliferation in fasicular pattern with oval shaped nuclei (H&E × 200). C, D The neoplastic cells showed positive cytoplasmic staining for CD117 (IHCx200). Reviewer 1Back to article page