A 55-year-old man presented with a 12 month history of a gradually enlarging eroded lesion on his right scrotum. The patient was a 15–20 cigarettes a day lifelong smoker. Initial histological examination showed a benign squamous lesion. Repeat biopsy at 3 months now showed a poorly differentiated squamous cell carcinoma. Occupational enquiry revealed a long history of exposure to mineral oils. The carcinogenic properties of mineral oils is well recognised and is strongly linked with squamous cell carcinoma (SCC) of the skin, including scrotal carcinoma. This case report highlights the importance of reviewing histology with a second biopsy if clinical manifestations change, and secondly to obtain a thorough occupational history in oddly- presenting lesions.
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Competing interests: None.
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