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Heaped-up epithelial proliferation may
form post-inflammatory pseudopolyps (PIPs) of all sizes. Seen here
is an impressively large post-inflammatory pseudopolyp with papillary
morphology not unlike that seen with villous colon carcinoma. PIPs,
however, are not malignant. Such exuberant mucosal regeneration is
typically seen during remission of UC, whereas inflammatory psuedopolyps
(Figure 4) are seen during active disease. |