title: Perirenal myelolipoma.
abstract: Extra-adrenal myelolipomas are rare, benign tumors composed of hematopoietic and adipose elements. Although these tumors can cause local symptoms or hemorrhage, they are generally asymptomatic. However, when discovered intraoperatively, they pose a diagnostic dilemma to the urologic surgeon. We present a case of perirenal extra-adrenal myelolipoma discovered intraoperatively in a patient with von Hippel-Lindau disease undergoing partial nephrectomy.
authors.affiliation: Urologic Oncology Section, National Cancer Institute, National Institutes of Health, Bethesda, Maryland 20892, USA.
authors.forename: J R
authors.initials: JR
authors.lastname: Wagner
authors.forename: D E
authors.initials: DE
authors.lastname: Kleiner
authors.forename: M M
authors.initials: MM
authors.lastname: Walther
authors.forename: W M
authors.initials: WM
authors.lastname: Linehan
mesh_terms: D000310:Adrenal Gland Neoplasms / Q000175:diagnosis; D006801:Humans; D008297:Male; D008875:Middle Aged; D018209:Myelolipoma / Q000175:diagnosis