title: Primary umbilical endometriosis.
abstract: A 45-year old nulliparous woman presented with umbilical pigmented lesion with cyclical bleeding. The lesion was excised and pathological diagnosis was umbilical endometriosis. The authors reviewed the current literature and discussed the different diagnosis and management of umbilical endometriosis.
authors.affiliation: Department of Surgery, Bangkok Metropolitan Administration Medical College and Vajira Hospital, Bangkok 10300, Thailand.
authors.forename: Suphakarn
authors.initials: S
authors.lastname: Techapongsatorn
authors.forename: Sungwan
authors.initials: S
authors.lastname: Techapongsatorn
mesh_terms: D000465:Algorithms; D004715:Endometriosis / Q000175:diagnosis / Q000628:therapy; D005260:Female; D006801:Humans; D008875:Middle Aged; D014472:Umbilicus