The poroid family of neoplasms includes hidroacanthoma simplex, eccrine poroma, dermal duct tumor, and poroid hidradenoma. These benign adnexal neoplasms are derived from the eccrine or apocrine sweat ducts or glands. Poroid neoplasms, including poromas, have been reported during pregnancy and have been hypothesized to be hormonally influenced. Poromatosis, the occurrence of multiple poromas, rarely has been reported in association with hidrotic ectodermal dysplasia, prior radiation therapy, and non-Hodgkin lymphoma occurring after chemotherapy. We report a case of eruptive poromatosis in pregnancy with 8 poromas occurring in the third trimester, further supporting the hypothesis of a hormonal association in the etiology of this neoplasm.
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