Perivascular epithelioid cell neoplasm of the colon

Figure 1 Perivascular epithelioid cell neoplasm (PEComa). A: PEComa in sigmoid colon site (HE, × 12.5); B: PEComa in sigmoid colon showing mucosal ulceration (HE, × 12.5); C: PEComa with individual cell nests invading mucosa (HE, × 100).

Figure 2 PEComa tumor body. A: PEComa tumor body with intervening delicate capillary network (HE, × 100); B: PEComa, tumor body (HE, × 400).

Figure 3 PEComa with HMB-45 antibody strongly stained cytoplasm of neoplastic cells (HMB-45, × 100).