Muir-Torre syndrome-is it really a new syndrome? Am J Dermapathology

Note: that there is an overlap here with Lynch Syndrome

"This syndrome is defined as the coexistence of sebaceous adenomas, sebaceus carcinomas, keratoacanthomas, and pedunculated tumors, some with lobulated structure. The cutaneous involvement (sebaceous gland tumor) is associated with at least a single internal malignancy; mostly colonorectal or genitourinary malignancies."