NCIt definition : A rare autosomal dominant genodermatosis associated with germline mutations of the
CYLD tumor suppressor gene. It is characterized by the development of multiple adnexal
tumors (usually cylindromas and trichoepitheliomas), typically in the skin of the
scalp. It manifests with numerous papules and/or large dome-shaped nodules on the
scalp, resembling a turban.;