Colon (tumor & nontumor)
Other nonneoplastic
Infarcted epiploic appendages

Topic Completed: 1 September 2013

Revised: 9 January 2019, last major update September 2013

Copyright: (c) 2003-2017,, Inc.

PubMed Search: infarcted epiploic appendages

Raul S. Gonzalez, M.D.
Page views in 2019: 3,355
Page views in 2020 to date: 2,091
Cite this page: Gonzalez R. Infarcted epiploic appendages. website. Accessed August 14th, 2020.
Definition / general
  • Infarction and subsequent fat necrosis of epiploic appendages (fat containing pouches of colonic peritoneum) that may remain attached or autoamputate and lie loose in the peritoneum
  • Epiploic appendagitis: inflammation but not infarction of appendages
  • Unattached infarcted appendages are known as "peritoneal loose bodies" or "peritoneal mice" (J Clin Gastroenterol 2006;40:427)
  • Epiploic appendages are chiefly on transverse and sigmoid colon
  • Can occur on appendix (S D Med 2006;59:511)
Clinical features
  • Laparoscopy
Radiology description
Case reports
Clinical images

Images hosted on other servers:

Central calcified oval mass in the pelvis

Pelvic mass

Gross description
  • Firm, gray-white nodules that may resemble metastatic tumor
  • Loose bodies can resemble an egg
Gross images

Images hosted on other servers:

Egg shaped mass

Giant loose peritoneal body

Giant loose body attached to omentum

Round pelvic mass

Central calcifications and a distinct fat plane

Macrograph of giant loose body

Microscopic (histologic) description
  • Central infarcted adipose tissue with peripheral fat necrosis and calcification, surrounded by thick, inflamed fibrotic tissue
Microscopic (histologic) images

Images hosted on other servers:

Low power view showing rounded contour

Central fat necrosis

Circumferential fibrous tissue

Additional references
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