Cuticular Poroma: A Poroma Mostly Composed of Cuticular Cells (Cuticuloma)

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Poromas are benign cutaneous adnexal neoplasms with differentiation toward excretory ducts of eccrine and apocrine glands. They are mainly composed of solid aggregates of small, monomorphous, round, and basophilic poroid cells, with a lower proportion of larger, squamous, eosinophilic cuticular cells, which are lining ductal structures with an eosinophilic luminal cuticle. In most cases of poromas, cuticular cells represent a small proportion of the neoplastic aggregates. We report 2 poromas mostly composed of cuticular cells, and on the basis of these findings, we have named cuticuloma to this histopathologic variant of poroma.

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