Sebaceous gland carcinoma occured in the trunk.

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A 65-year-old man visited the dermatology with complaint of a cutaneous nodule on his right chest for more than 20 years. Physical examination showed a 26×24mm sized, dome-shaped, firm, somewhat yellowish cutaneous nodule with fine telan-giectasia. Microscopically, irregularly shaped tumor nests were present from just beneath of the epidermis to the deep cutis. Palisading arrangement was not seen on the periphery of each lobules. The anaplasia of each cell was prominent and large round cells with foamy cytoplasm were intermingled with the tumor cell nests. The cytoplasm of the foamy cells was positive for Sudan III stain.
日本皮膚悪性腫瘍学会の論文