Soft tissue

Adipose tissue tumors

Other benign lesions

Lipoma arborescens

Last author update: 1 June 2012
Last staff update: 20 November 2020

Copyright: 2002-2023,, Inc.

PubMed Search: Lipoma arborescens [title]

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Cite this page: Singh C. Lipoma arborescens. website. Accessed June 9th, 2023.
Definition / general
  • Also called villous lipomatous proliferation of synovial membrane, diffuse lipoma of joint
  • Not a WHO diagnosis
  • Rare
  • Older patients, usually male, associated with joint trauma, degenerative joint disease and chronic arthritis
Clinical features
Case reports
  • Synovectomy
  • May recur since often is a reactive process
Gross description
  • Yellow fat in villous fronds
Gross images

Contributed by Mark R. Wick, M.D.
Microscopic (histologic) description
  • Hypertrophic villous projections of fat lined by synovial cells, variable scattered inflammatory cells
Microscopic (histologic) images

Contributed by Mark R. Wick, M.D.

Images hosted on other servers:

Synovial lined villous proliferation, H&E

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