Myoepithelial-Rich and Infiltrative Giant Vascular Eccrine Spiradenoma: A Unique Presentation of a Rare Adnexal Tumor

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Abstract

A rare variant of the eccrine spiradenoma, the giant vascular eccrine spiradenoma, has been characterized as a large circumscribed and sometimes hemorrhagic solitary tumor occurring in adults older than 50 years. Histopathologically, the lesion is comprised of distinct cell populations and cystic hemorrhagic glandular spaces. We present a 68-year-old Bengali man with a giant vascular eccrine spiradenoma and describe immunohistochemical features of this tumor. In addition, we highlight unique aspects of this case, including a rich myoepithelial component and focal pseudocapsular infiltration.

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