Primary cutaneous CD30+ large-cell lymphoma presenting as a scrotal plaque.

Primary cutaneous CD30+ large-cell lymphoma (CD30+ LCL) is a rare subtype of cutaneous T cell lymphoma. We report a patient with a one-year history of an enlarging scrotal plaque. Skin biopsy stained positive for CD30, and after thorough systemic evaluation, a diagnosis of primary cutaneous CD30+ LCL was made. Most commonly CD30+ LCL presents on the extremities and trunk. We present the first case to our knowledge of a patient initially presenting with a solitary scrotal nodule. When primary cutaneous CD30+ LCL is suspected, it is important to conduct a thorough systemic evaluation for systemic LCL and immunohistological studies for CD30- types. Ruling these conditions out will prevent unnecessarily aggressive treatment for primary cutaneous CD30+ LCL, an indolent disease with a favorable prognosis.