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Gallbladder

Congenital anomalies

Heterotopia

Reviewer: Hanni Gulwani, M.D. (see Reviewers page)
Revised: 10 February 2013, last major update September 2012
Copyright: (c) 2003-2013, PathologyOutlines.com, Inc.

General
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● Also called ectopia or choristoma
● Normal tissue in abnormal location
● Usually incidental
● Includes liver parenchymal nodules, usually 2.5 cm or less, suspended to gallbladder by mesenteric stalk (DD: accessory lobe)
● Gastric heterotopia arises as intramural nodules, plaques or polyps, in neck or cystic duct, rarely with peptic ulceration
● Pancreatic heterotopia has acinar tissue, rarely islets, that may cause acute pancreatitis in gallbladder (Ryoikibetsu Shokogun Shirizu 1996;(9):360)

Case reports
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● 36 year old man (Cir Esp 2013;91:130)
● 62 year old woman and 78 year old man (Gut 2001;48:719)
● 72 year old woman and 83 year old woman (G Chir 2011;32:255)

Micro images
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Gastric heterotopia


Pancreas heterotopia of common bile duct

 
Various images

End of Gallbladder > Congenital anomalies > Heterotopia

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