Granular cell tumor of colon: Report of a case and review of literature

Figure 1 A hemispheric, yellowish submucosal tumor with intact mucosa, about 4 mm in diameter in transverse colon revealed by endoscopy.

Figure 2 A submucosal tumor revealed by histological examination in resected tissue. A: Resected lesion showing a submucosal tumor covered with normal mucosa (HE staining, × 40). B: Higher magnification view of the tumor (HE staining, left: × 100; right: × 200).

Figure 3 Diffuse and strong expression of S-100 protein in tumor shown by immunohistochemical examination (Original magnification: × 100).