title: Case hepatic endometriosis: a continuing diagnostic dilemma.
abstract: BACKGROUND
  Intraparenchymal endometriosis of liver is rare. It may present as liver tumour and the diagnosis is not usually established till after surgery.
  
  
  METHODS
  A 48-year-old postmenopausal woman presented with right upper quadrant pain and a cystic liver mass. Liver function tests and tumour markers (alphaFP, CEA, CA 19-9, and CA 125) were normal. Radiological imaging (USS, CT and MRI) suggested a thick walled cystic mass involving segments IV and VIII with complex intracystic septations. Frozen section at operation suggested a benign cystadenoma. The cyst was enucleated using a CUSA (Cavitron ultrasonic aspirator). The final histology confirmed endometriosis.
  
  
  CONCLUSIONS
  Eleven cases of hepatic endometrioma have been reported and only four in postmenopausal women. Preoperative diagnosis poses a challenge and so far none of the cases have been diagnosed preoperatively. Surgery remains the treatment of choice. Accurate diagnosis at time of operation may avoid extensive liver surgery and its associated morbidity.
authors: Hepatobiliary and Transplant Unit, St James's University Hospital, Leeds LS9 7TF, UK. peter.lodge@leedsth.nhs.uk
authors: P J
authors: PJ
authors: Goldsmith
authors: N
authors: N
authors: Ahmad
authors: D
authors: D
authors: Dasgupta
authors: J
authors: J
authors: Campbell
authors: J A
authors: JA
authors: Guthrie
authors: J P A
authors: JP
authors: Lodge
mesh_terms: D004715:Endometriosis / Q000175:diagnosis* / Q000473:pathology; D005260:Female; D006801:Humans; D008099:Liver / Q000473:pathology; D008107:Liver Diseases / Q000175:diagnosis* / Q000473:pathology; D008875:Middle Aged