Occult adenocarcinoma metastatic to a skin graft donor site.

Internal malignancies present with metastases to the skin 0.4% of the time. Cutaneous metastases not uncommonly develop in areas of damaged skin such as radiodermatitis and surgical scars. This report involves a 78-year-old male with metastatic adenocarcinoma from an unknown primary site that presented in a split-thickness skin graft donor site. This appears to be the first reported case of internal malignancy metastatic to skin altered by grafting.