S2228 A Segmental Colitis Associated With Diverticulosis versus Inflammatory Bowel Disease: A Diagnostic Dilemma Despite Total Proctocolectomy

Abstract

Figure 1. (A) Colonoscopy image of granular cell tumor in the ascending colon appearing as an 8 mm submucosal nodule. (B) H&E stain showing submucosal tumor covered with normal mucosa (magnification 40x). (C) H&E stain showing large polyclonal cells with abundant granular, eosinophilic cytoplasm and wavy nuclei (magnification 200x). (D) Immunohistochemical analysis showing positive staining of S-100 (magnification 200x).