Primary cutaneous anaplastic large cell lymphoma

CD30 -positive lymphoproliferative skin diseases are the second most common form of cutaneous T cell lymphoma and have an excellent prognosis. We present a case of a primary cutaneous anaplastic large cell lymphoma. A 76-year-old man presented with an asymptomatic and recurring lesion on the anterior aspect of the left arm and forearm. On examination, confluent, infiltrated erythematous papules with superficial lichenification were seen. Histologic examination showed extensive lichenoid infiltrate without epidermotropism and immunohistochemical study showed great amount (more than 75%) of CD30+ lymphocytes confirming the diagnosis of primary cutaneous anaplastic large cell lymphoma (PCALCL).

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