Case Discussion
Poromas belong to the spectrum of acrospiromas, along with nodular hidradenomas, clear cell hidradenomas, dermal duct tumors, and hidroacanthoma simplex. They are comprised of epithelial cells that show tubular differentiation, with anastomosing cords of cells and ductal differentiation. Like many adnexal tumours, epidermal attachments are usually seen. Eccrine or apocrine features can be seen, which can vary depending on the location.
They are commonly located on the extremities. Complete, conservative excision is generally curative.
