Subungual Squamous Cell Carcinoma in a Patient with Psoriasis.

Abstract

Subungual squamous cell carcinoma (SCC) is often misdiagnosed as a benign condition so most cases are invasive by the time of diagnosis; nail elevation and biopsy are recommended in all suspicious cases.Although psoriasis is not an independent risk factor for subungual SCC, the cyclosporine and PUVA used to treat psoriasis are risk factors for cutaneous SCC.The aetiology for subungual SCC is still unclear, but it should be suspected in patients with psoriasis and a suspicious presentation.