Four cases of subungual melanoma.

The authers found 4 subungual melanomas (SUM) among 17 cases of cutaneous melanoma (24%) at their clinic last 5 years. All cases occurred on the hands.Case 1: A 24-year-old female had SUM in situ on her left little finger. Total nail excision was done. The defect was covered with artificial dermis and delayed skin graft.Case 2: A 35-year-old female had SUM, Stage II (pT3apNOMO) on her left right finger. She was underwent amputation at I-P joint and wide local skin excision, followed by reversed forearm flap transfer. Then axilla dissection and DAV-interferon β therapy were performed.Case 3: A 89-year-old male had SUM, Stage II (pT3aNOMO) on his right middle finger. Ray amputation and interferon β therapy were performed.Case 4: A 68-year-old female had SUM, Stage III (pT4apNOMO) on her right index finger. Ray amputation, axilla dissection and DAV-interferon β therapy were performed.