Adnexal carcinoma of skin

**Definition:** A carcinoma arising from the sebaceous glands, sweat glands, or the hair follicles. Representative examples include sebaceous carcinoma, apocrine carcinoma, eccrine carcinoma, and pilomatrical carcinoma.

**Inclusions:** - Appendageal carcinoma of skin - Primary cutaneous adenoid cystic carcinoma - Primary cutaneous mucinous carcinoma