Pseudopolyps are features of-
Crohn's disease
Ulcerative colitis
Celiac sprue
Whipple's disease
Isolated islands of regenerating mucosa often bulge into the lumen to create small elevations, termed as pseudopolyps in Ulcerative Colitis TEXTBOOK OF ROBBINS BASIC PATHOLOGY NINTH EDITION PAGE.590 IMAGE REF: TEXTBOOK OF PATHOLOGY HARSH MOHAN, 6TH EDITION, FIG: 20.27 PAGE :568
G.I.T