<prompt> Commonly undergoing malignant transformation isareFAPCrohns diseaseUlcerative colitisEnteric colitis  <response>: .FAMILIAL ADENOMATOUS POLYP FAP is inherited as an autosomal dominant neoplastic condition chromosome no. 5. It presents in younger age group--15-20 years. Incidence is equal in both sex, involving commonly the large intestine but can also occur in stomach, duodenum and small intestine. It is familial with a high potential for malignant transformation. If there is no adenoma at the age of 30 years, then it is not FAP of colon. It can be associated with duodenal or ampullary carcinomas , Gardners syndrome Desmoid tumour in the abdomen, osteomas 75 and epidermoid cysts and also Turcots syndrome FAP brain tumour medulloblastoma or gliomas or sarcoma of bone. Usually multiple over 100. Presents with lower abdominal pain, loose stools with blood and mucus, weight loss. ref:SRB;s manual of surgery,ed 3,pg no 838 