EXPLORATORY LAPAROTOMY
A few cases of chronic diarrhea may warrant an exploratory laparotomy, such as cats with mass lesions or those in which jejunal
disease or submucosal pathology is suspected. When compared with an endoscopic examination, a surgical approach provides some
advantages, including therapeutic mass removal, collection of full-thickness biopsy samples, and examination of the liver,
pancreas, and abdominal lymph nodes. However, patient discomfort and recovery time are increased with surgery, and the risk-benefit
ratio of surgery vs. endoscopy should be carefully evaluated in each patient. If surgery is performed, it is essential to
evaluate the entire abdominal cavity. Even if focal disease is identified, it is often worthwhile to take full-thickness biopsy
samples from each area of the GI tract, even if it looks and feels grossly normal.
CONCLUSION
Accurate and thorough diagnostic testing is often crucial in determining the underlying cause of chronic diarrhea. Even with
the most sensitive tests, the disease process leading to chronic diarrhea can be painstakingly elusive. Ultimately, test results
partnered with response to therapy may be the only way to definitively diagnose the cause of chronic diarrhea in many of our
feline patients. See the second part of this article for details on treatment.
Sally Purcell, DVM Audrey K. Cook, BVM&S, MRCVS, DACVIM, DECVIM-CA Department of Small Animal Clinical Sciences College of Veterinary Medicine Texas A&M University College Station, TX 77843-4474
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