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

Figure 6

Images of the pathologic analyses of the cecal lesion. Inflammatory cell infiltration, mainly consisting of mononuclear cells, in addition to some neutrophils is observed in the biopsy specimens (a). Although CD20-positive lymphocytes are predominant (b), CD3-positive cells are observed as well (c). Predominance of neither Ig κ (d) nor Ig λ (e) is observed on staining.

(a)

(b)

(c)

(d)

(e)