All are true about Gardner&;s syndrome except

.* Associated with desmoid tumours seen in the scar, abdomen, intraabdominal region and mesenteric fibromatosis. * Congenital hyperophy of pigment layer of retina (seen as pigment spots)--commonly seen. * Often associated with MEN IIb syndrome. Carcinoma colon is more common in individuals with adenoma colon or with familial adenomatous polyposis (FAP), Gardner's syndrome, Turcot's syndrome. ref:SRB&;s manual of surgery,ed 3,pg no 672