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==Introduction==

==Description==

'''Right dorsal displacement''' of the large colon is a cause of colic in horses. It is much less common than [[Large Colon, Left Dorsal Displacement - Horse|left dorsal displacements]] and although clinical signs can be variable, it is usually more acute and serious in presentation. In all cases the left dorsal and ventral large colon displace to sit between the caecum and the right body wall. The pelvic flexure is usually displaced cranially towards the diaphragm; the caecum is shifted towards the midline and may become secondarily distended. In some cases the displacement is accompanied by a volvulus which is responsible for more acute presentation. The exact cause of the condition is not known.

'''Right dorsal displacement''' of the large colon is a cause of colic in horses. It is much less common than [[Large Colon, Left Dorsal Displacement - Horse|left dorsal displacements]] and although clinical signs can be variable, it is usually more acute and serious in presentation. In all cases the left dorsal and ventral large colon displace to sit between the caecum and the right body wall. The pelvic flexure is usually displaced cranially towards the diaphragm; the caecum is shifted towards the midline and may become secondarily distended. In some cases the displacement is accompanied by a volvulus which is responsible for more acute presentation. The exact cause of the condition is not known.

* Signs of [[Shock|shock]]  

* Signs of [[Shock|shock]]  

On rectal examination a gas distended colon is palpable in the right caudal abdomen, the caecum is displaced towards the midline and the pelvic flexure cannot be palpated as it has moved cranially towards the diaphragm. If the displacement is accompanied by a 270° volvulus then the colonic walls will be thickened and oedematous.   

On [[Rectal Examination of the Horse|rectal examination]] a gas distended colon is palpable in the right caudal abdomen, the caecum is displaced towards the midline and the pelvic flexure cannot be palpated as it has moved cranially towards the diaphragm. If the displacement is accompanied by a 270° volvulus then the colonic walls will be thickened and oedematous.   

   

   

See '''[[:Category:Colic Diagnosis in the Horse|Colic Diagnosis in Horses]]'''

See '''[[:Category:Colic Diagnosis in the Horse|Colic Diagnosis in Horses]]'''

===Ultrasound===

===Ultrasound===

Abdominal ultrasound provides confirmation of the diagnosis.

[[Colic Diagnosis - Abdominal Ultrasound|Abdominal ultrasound]] provides confirmation of the diagnosis.

==Treatment==

==Treatment==

==Prognosis==

==Prognosis==

If the condition is identified early and surgical correction is carried out without delay then the prognosis is very good. In cases where the vascular supply to the colon has been compromised the progonsis is much worse.  

If the condition is identified early and surgical correction is carried out without delay then the prognosis is very good. In cases where the vascular supply to the colon has been compromised the prognsis is much worse.  

 

==References==

==References==

* Rose, R. J. and Hodgson, D. R. (2000) '''Manual of Equine Practice''' (Second Edition) Sauders

* Rose, R. J. and Hodgson, D. R. (2000) '''Manual of Equine Practice''' (Second Edition) Sauders

* White, N.A., Edwards, G.B. (1999) '''Handbook of Equine Colic''' ''Reed Educational and Professional Publishing Ltd''

* White, N.A., Edwards, G.B. (1999) '''Handbook of Equine Colic''' ''Reed Educational and Professional Publishing Ltd''

[[Category:Surgical Colic in the Horse]]

[[Category:Surgical Colic in the Horse]]

[[Category:To_Do_-_lizzyk]]

[[Category:Expert_Review]]

[[Category:To_Do_-_Review]]

[[Category:Colic - Large Colon Causes]]