title: Simultaneous adrenal and extra-adrenal myelolipoma - an uncommon incident: case report and review of the literature.
abstract: BACKGROUND
  Extra-adrenal myelolipomas are rare benign tumours. Other soft tissue tumours such as well-differentiated liposarcomas appear morphological almost identical. Preoperative imaging and especially biopsy are important tools to diagnose these lesions.
  
  
  METHODS
  We report a very seldom case of a simultaneous myelolipoma of the adrenal gland in association with an extra-adrenal myelolipoma in an 75-year-old man. With a review of the literature we describe and discuss the aetiology, differential diagnosis and treatment of patients with respect to adrenal and extra-adrenal lesions.
  
  
  CONCLUSIONS
  The appearance of a simultaneous adrenal and extra-adrenal myelolipoma is a rare incident. We conclude that such lesions should be considered in the differential diagnosis of a fat-containing tumour in the retroperitoneal tissue/compartment.
authors.affiliation: Department of General, Visceral and Transplant Surgery, Comprehensive Cancer Center, Tuebingen, Germany. derek.zieker@med.uni-tuebingen.de
authors.forename: Derek
authors.initials: D
authors.lastname: Zieker
authors.forename: Ingmar
authors.initials: I
authors.lastname: Königsrainer
authors.forename: Stephan
authors.initials: S
authors.lastname: Miller
authors.forename: Ulrich
authors.initials: U
authors.lastname: Vogel
authors.forename: Karl
authors.initials: K
authors.lastname: Sotlar
authors.forename: Wolfgang
authors.initials: W
authors.lastname: Steurer
authors.forename: Alfred
authors.initials: A
authors.lastname: Königsrainer
authors.forename: Thorsten G
authors.initials: TG
authors.lastname: Lehmann
mesh_terms: D000310:Adrenal Gland Neoplasms / Q000175:diagnosis* / Q000209:etiology / Q000628:therapy; D000368:Aged; D006801:Humans; D008297:Male; D019042:Muscle Neoplasms / Q000175:diagnosis* / Q000209:etiology / Q000628:therapy; D018209:Myelolipoma / Q000175:diagnosis* / Q000209:etiology / Q000628:therapy; D012186:Retroperitoneal Neoplasms / Q000175:diagnosis* / Q000209:etiology / Q000628:therapy