. The highest malignant potential is seen in -
The malignant potential of familial polyposis coli is very high. Colorectal cancer develops viually in 100% of cases by age of 50 years if not treated with colectomy. TEXTBOOK OF PATHOLOGY 6TH EDITION HARSH MOHAN PAGE NO:585
Crohn's disease
Ulcerative colitis
Familial polyposis
Infantile polyp
G.I.T