Abstract
Muir-Torre Syndrome (MTS) is an autosomal dominant cancer syndrome that results from a mutation in mismatch repair genes. It is characterized by sebaceous neoplasms, keratoacanthomas, and visceral neoplasm(s) affecting the colon, uterus, ovaries, bladder, or other organs. Mismatch repair immunohistochemistry and microsatellite instability testing of sebaceous neoplasms is available to confirm a diagnosis of MTS. Early recognition of cutaneous features of MTS could lead to early diagnosis and prevention of advanced neoplasms in patients and family members.