A benign sweat gland neoplasm usually occurring in the scalp or the face. It may present as solitary or multiple papular or nodular lesions. It may be a sporadic lesion or part of Brooke-Spiegler syndrome. It arises from the dermis and has a multinodular, circumscribed appearance. The nodules contain basaloid cells with small, dark nuclei. Complete excision is usually curative. The disease is Monarch Disease Ontology term MONDO_0021812 (adnexal spiradenoma/cylindroma of a sweat gland). Also known as: cylindroma, cylindroma of skin, cylindroma of the skin, dermal cylindroma.