Abstract
An 87-year-old woman presented with a nodule on the right temple. She had noticed the erythematous nodule on the right temple four months ago, and the nodule had rapidly enlarged accompanied by ulceration. We first suspected squamous cell carcinoma, but histological findings from the nodule revealed a sheet hyperplasia of a rhabdoid cell to show nuclear fission image, good acid inclusion bodylike structure. Cytokeratin 7 and Vimentin were positive in these cells, but Desmin and S-100 protein were negative. We finally diagnosed this nodule as a malignant rhabdoid tumor. The patient was operated on meningioma at the age of 82 years. Metastasis of the meningioma was ruled out by different histological findings. For the following year until now, the tumor has not recurred and no signs of metastasis have developed. [Skin Cancer (Japan) 2006; 21: 306-309]
