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Rapidly Progressive Acute Pustular Secondary Cutaneous Anaplastic Large Cell Lymphoma.

Cutaneous anaplastic large cell lymphoma (ALCL) is an uncommon diagnosis that may either present as a primary cutaneous process or develop secondary to systemic disease. It is imperative to distinguish between these two entities due to differences in treatment recommendations and prognosis. Here, their salient features will be reviewed. It is also important that clinicians recognize atypical clinical morphologies of cutaneous ALCL, including pustular lesions, which may masquerade as infectious or other inflammatory conditions, thereby delaying the onset of treatment. In this report, we present a case of secondary cutaneous ALCL associated with an atypical pustular morphology and an aggressive, fatal course. J Drugs Dermatol. 2016;15(9):1132-1135.