Poroma

**Semantic type:** Neoplastic Process

**Definition:** A benign, well circumscribed adnexal neoplasm arising from the intraepidermal portion of the sweat gland duct. It usually presents as a solitary, dome-shaped papule, nodule, or plaque on acral sites. It is characterized by a proliferation of uniform basaloid cells in the dermis and is associated with the presence of focal ductal and cystic structures. Complete excision is curative.

**Synonyms:** - Poroid Tumor