Multiple sebaceous gland tumours associated with polyposis of the colon and bony abnormalities.

The cases are presented of two siblings with multiple cutaneous tumours associated with adenomatous polyps of the colon and bony abnormalities. In one patient an adenocarcinoma of the colon supervened, and there was a history of adenocarcinoma of the colon without the presence of other abnormalities in a third sibling. Clinically the sebaceous tumours resembled sebaceous hyperplasia, but histologically they exhibited features of sebaceous adenoma.The association of a variety of multiple soft tissue tumours, particularly epidermal cysts, with polyposis of the colon and bony abnormalities is well recognized. However, multiple solid sebaceous tumours have not been reported previously as a feature of this syndrome. They should in future alert the physician to the possible presence of multiple polyposis of the colon in affected individuals and immediate relatives.