Eccrine Poromatosis Following Lymphoma Treatment: A Case Report and Literature Review

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Suzanne Alkul
Rachel Graubard
Carina Wasko


eccrine poromatosis, poroma, lymphoma therapy


Eccrine poromas are benign tumors that arise from the eccrine sweat ducts, commonly presenting as solitary lesions. Eccrine poromatosis, the sudden eruption of multiple eccrine poromas, is a rare phenomenon that generally occurs in immunosuppressed patients at any time after receiving treatment for malignancy.  We report a case of eccrine poromatosis in a 79-year-old male patient with a previous history of recurrent T-cell lymphoma. Over the course of his disease, he was treated with polychemotherapy, radiation, and a definitive bone marrow transplant. The patient presented to the dermatology clinic 18 years after his initial diagnosis with a new onset of pruritic papules on the neck and chest. Histologic evaluation revealed all lesions to be eccrine poromas. This is the longest reported time interval between initial diagnosis of a primary malignancy and development of eccrine poromatosis. There is no evidence at this time to suggest that appearance of such lesions is indicative of cancer recurrence; therefore, there is no indication for further oncologic evaluation.


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