2018 Volume 32 Issue 3 Pages 285-289
A 48－year－old man presented with a tumor measuring 8 × 8 mm on the right forehead, which he noted 4 months before visiting our department. Histopathological findings indicated a cystic tumor. The tumor cells had abundant eosinophilic cytoplasm and prominent round vesicular nuclei. On immunohistochemical analysis, the cells were positive for S－100 protein, Melan－A, and HMB－45. The findings were diagnostic of rhabdoid melanoma. No other lesions were found on additional examinations, including positron emission tomography－computed tomography. To our knowledge, this is the 13th case of primary cutaneous rhabdoid melanoma reported to date.[Skin Cancer (Japan) 2017 ; 32 : 285－289]
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