Appendiceal Orifice Inflammation in Ulcerative Colitis Mimicking Mucosa-Associated Lymphoid Tissue Lymphoma in the Cecum

Figure 2

Images of the pathologic analysis of the gastric lesion. Small to medium sized lymphoid cells are observed in the biopsy specimens (a). These cells are positive for CD20 (b) and negative for CD3 (c). Immunostaining for cytokeratin (CAM5.2) shows the formation of lymphoepithelial lesions (d). Gastric MALT lymphoma was diagnosed.

(a)

(b)

(c)

(d)