Hidradenocarcinoma

**Semantic type:** Neoplastic Process

**Definition:** A carcinoma with apocrine and less often eccrine differentiation, arising from the sweat glands. It usually presents as a solitary slow growing nodule in the dermis or subcutaneous tissues. It is characterized by a nodular growth pattern and it is often associated with necrotic changes.

**Synonyms:** - Clear Cell Eccrine Carcinoma