Article Text

Download PDFPDF
Metastatic retroperitoneal epithelioid angiomyolipoma
  1. Chakshu Gupta1,
  2. Ashok K Malani2,
  3. Vikram Gupta2,
  4. Jaswinder Singh3,
  5. Hussam Ammar3
  1. 1Department of Pathology, Heartland Regional Medical Center, St Joseph, Missouri, USA
  2. 2Department of Oncology, Heartland Regional Medical Center, St Joseph, Missouri, USA
  3. 3Department of Internal Medicine, Heartland Regional Medical Center, St Joseph, Missouri, USA
  1. Correspondence to:
    Dr C Gupta
    5325 Faraon Street, St Joseph, MO 64506, USA; chakgupta{at}


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.

  • AML, angiomyolipoma
  • EAML, epithelioid angiomyolipoma
  • HMB, human meloma black
  • PEC, perivascular epithelioid cell

Statistics from

Request Permissions

If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.


  • Competing interests: None declared.