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. The disease is MONDO_0006973 (skin appendage carcinoma). Also known as: adnexal carcinoma, carcinoma of adnexa, carcinoma of cutaneous appendage, carcinoma of skin appendage, carcinoma, adnexal, malignant, cutaneous appendage carcinoma.