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October 2003

Multiple Hyperkeratotic Nodules on the Arms—Quiz Case

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Arch Dermatol. 2003;139(10):1363-1368. doi:10.1001/archderm.139.10.1363-a

A 47-year-old Hispanic man first noticed an asymptomatic growth on the extensor surface of his left forearm 5 years before presentation. He subsequently had similar growths on his hands and forearms. His medical history was notable for keratinizing squamous cell carcinoma of the bladder 4 years earlier. The tumor was completely resected, and there was no pathologic evidence of metastasis. Generally, the patient was in good health, and a review of systems revealed no abnormalities. His occupational history included chicken processing and work with cement, paint, and tobacco. He had no known exposure to cutting oils or tar.

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