Abstract
A 59-year-old woman had noticed a tumor on the nape a year ago but had ignored it.
When she was referred to our clinic, there was a red-elastic demarcated papule, 5mm in diameter, on the Unna's nevus on the back of the neck. Beneath the papule there was a relatively hard subcutaneous tumor measuring 15×20mm in size, which moved freely from the tissue under the tumor. There were no lymph nodes swelling around the neck. Skin biopsy showed the typical findings of sebaceous carcinoma. After wide excision of the tumor including normal skin, she hasn't had local recurrence or experienced distant metastasis. As sebaceous carcinoma usually shows a yellow nodule around the eyes, subcutaneous sebaceous carcinoma is extremely rare even in extraorbital ones. Since this tumor is highly malignant, early detection and early treatment are essential. [Skin Cancer (Japan) 2005; 20: 43-46]
