Colon non tumor
Non-neoplastic, non-congenital lesions
Infarcted epiploic appendages

Author: Raul S. Gonzalez, M.D. (see Authors page)

Revised: 9 January 2017, last major update September 2013

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

PubMed Search: infarcted epiploic appendages
Cite this page: Infarcted epiploic appendages. PathologyOutlines.com website. http://www.pathologyoutlines.com/topic/coloninfarcted.html. Accessed April 23rd, 2017.
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
Terminology
  • 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)
Sites
  • Epiploic appendages are chiefly on transverse and sigmoid colon
  • Can occur on appendix (S D Med 2006;59:511)
Etiology
Clinical Features
Diagnosis
  • 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

Micro Description
  • Central infarcted adipose tissue with peripheral fat necrosis and calcification, surrounded by thick, inflamed fibrotic tissue
Micro Images

Images hosted on other servers:

Low power view showing rounded contour

Central fat necrosis

Circumferential fibrous tissue

Additional References