Soft tissue
Adipose tissue
Lipoma arborescens

Author: Charanjeet Singh, M.D. (see Authors page)

Revised: 28 July 2016, last major update June 2012

Copyright: (c) 2002-2016, PathologyOutlines.com, Inc.

PubMed Search: Lipoma arborescens [title]

Cite this page: Lipoma arborescens. PathologyOutlines.com website. http://pathologyoutlines.com/topic/softtissueadiposelipomaarb.html. Accessed December 14th, 2017.
Definition / general
Terminology
  • Also called villous lipomatous proliferation of synovial membrane, diffuse lipoma of joint
  • Not a WHO diagnosis
Epidemiology
  • Rare
  • Older patients, usually male, associated with joint trauma, degenerative joint disease and chronic arthritis
Clinical features
Case reports
Treatment
  • Synovectomy
  • May recur since often is a reactive process
Gross description
  • Yellow fat in villous fronds
Gross images

Images hosted on PathOut servers:

Courtesy of Mark R. Wick, M.D.

Microscopic (histologic) description
  • Hypertrophic villous projections of fat lined by synovial cells, variable scattered inflammatory cells
Microscopic (histologic) images

Images hosted on PathOut servers:

Courtesy of Mark R. Wick, M.D.



Images hosted on other servers:

Synovial lined villous proliferation, H&E

H&E