title: Metastatic retroperitoneal epithelioid angiomyolipoma.
abstract: Angiomyolipoma (AML) is a rare benign neoplasm that usually arises in the kidneys, but may rarely originate in sites such as the retroperitoneum, liver and bone. It is characterised by an intimate admixture of blood vessels, smooth muscle and fat. This multiphasic composition allows for its recognition on ultrasound and CT scan examination. Metastases are exceedingly uncommon, and only one other case of metastatic extrarenal AML exists in the literature. Histological variants of AML such as epithelioid angiomyolipoma (EAML) are considered to be locally aggressive. A unique case of an EAML of the retroperitoneum that metastasised to the liver and bone in an 80-year-old woman is described.
authors.affiliation: Department of Pathology, Heartland Regional Medical Center, St Joseph, Missouri, USA. chakgupata@yahoo.com
authors.forename: Chakshu
authors.initials: C
authors.lastname: Gupta
authors.forename: Ashok K
authors.initials: AK
authors.lastname: Malani
authors.forename: Vikram
authors.initials: V
authors.lastname: Gupta
authors.forename: Jaswinder
authors.initials: J
authors.lastname: Singh
authors.forename: Hussam
authors.initials: H
authors.lastname: Ammar
mesh_terms: D000369:Aged, 80 and over; D018207:Angiomyolipoma / Q000175:diagnosis / Q000473:pathology*; D001859:Bone Neoplasms / Q000175:diagnosis / Q000473:pathology / Q000556:secondary; D005260:Female; D006801:Humans; D008113:Liver Neoplasms / Q000175:diagnosis / Q000473:pathology / Q000556:secondary*; D012186:Retroperitoneal Neoplasms / Q000473:pathology*