| 英文描述 | Impactions account for many large bowel obstructions and are usually found at the pelvic flexure or just proximal to the transverse colon in the right dorsal colon. Tend to be less acute and severe than other forms of colic; there is often a history of mild intermittent abdominal pain. Dx by clinical signs or surgery. Sand may cause the impaction where soil is sandy and hay is fed on the ground. There is one report of impaction apparently secondary to malformation of the colon, and strictures of the large colon have been described. |
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