title: Urachal endometrioma: a case report.
abstract: BACKGROUND
  We discuss a rare presentation of an unusual case of endometrioma.
  
  
  METHODS
  A 40-year-old Caucasian woman presented with subacute abdominal pain and a suprapubic mass. A final diagnosis was made after the mass was resected and histopathology confirmed an endometrioma originating from an urachal remnant. Select imaging studies and histopathology are presented in this case report.
  
  
  CONCLUSIONS
  While endometriomata are well known to arise from abdominal scars, the condition described in this case report is a rare example of an endometrioma arising from the urachus. A review of the pathological complications of the urachus is also included.
authors.affiliation: Department of Urology, Adelaide and Meath Hospitals incorporating the National Children's Hospital, Tallaght, Dublin 24, Ireland.
authors.forename: Katherine M
authors.initials: KM
authors.lastname: Browne
authors.forename: Stephen S
authors.initials: SS
authors.lastname: Connolly
authors.forename: Niamh
authors.initials: N
authors.lastname: Daly
authors.forename: Tom
authors.initials: T
authors.lastname: Crotty
authors.forename: Robert J
authors.initials: RJ
authors.lastname: Flynn