There are a handful of well recognized displacements of the large colon. This is one of the more common.
In this displacement, the large colon pelvic flexure and left dorsal colons, which normally reside in the rear left quadrant of the horse’s abdomen, end up on the right side of the horse. This causes a kink in the flow of the colon, causing obstruction to the flow of ingesta.
There is usually a large impaction accompanying this displacement. It is in almost all cases, this is a problem that can only be resolved with colic surgery.
Some horses with these displacements may look quite bright for a long period of time, and only in mild pain. Unlike strangulating obstructions of the colon, the intestine is not badly damaged. The horse may respond well to flunixin and other pain relievers and give a false impression for a period of time that the problem has resolved.
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Prognosis & Relevant Factors
The prognosis for this displacement is good when promptly corrected at surgery.
Large bodied breeds like Warmbloods are probably predisposed to developing this condition. Post-foaling mares may also have a predisposition for this type of displacement.
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