MSD Manual

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Professional Version

Small-intestinal Fibrosis in Horses


Allison J. Stewart

, BVSC (Hons), MS, DACVIM-LA, DACVECC, The University of Queensland

Last full review/revision Sep 2013 | Content last modified Jun 2016

Extensive fibrosis of the submucosa of the small intestine has been associated with weight loss and recurrent colic in adult horses on pasture in northern Colorado. All affected horses died or were euthanized because of their deteriorating condition. The cause is unknown.

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