Primary Cutaneous Peripheral T-Cell Lymphoma in a Sporotrichoid Pattern: A Case Report

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Abstract

We present the extraordinary case of a 72-year-old man with a history of primary cutaneous peripheral T-cell lymphoma not otherwise specified (pcPTCL-NOS) previously controlled with topical agents who developed tumours in a sporotrichoid pattern. Culture of the tumours was negative, and histopathology showed findings consistent with recurrent pcPTCL. The tumours were successfully treated with localised radiation therapy. Sporotrichoid lesions are an extremely rare and atypical presentation of cutaneous lymphoma, with only 2 other cases reported in the literature. Our case reinforces the need to include cutaneous lymphoma in the differential diagnosis of nodules on the extremities spreading in a sporotrichoid pattern. Clinical recognition of this atypical presentation of cutaneous lymphoma allows for prompt, effective treatment, which might include localised radiation therapy.

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