MONDO_0002297 (epidermal appendage tumor) is a benign or malignant neoplasm that arises from the hair follicles, sebaceous glands, or sweat glands. Also known as: Epidermal appendage neoplasm, Epidermal appendage tumor, Epidermal appendage tumour, adnexal neoplasm of skin, adnexal neoplasm of the skin, adnexal tumor of skin, adnexal tumor of the skin, adnexal tumour of skin.