A Case of End-On Colostomy in a Dog Suffering from Dyschezia

A 12-year-old Shetland sheepdog with dyschezia was presented to the clinic. Dyschezia was considered to have been caused by rectal stricture due to a perianal mass containing the distal colon, rectum, and anus. Considering the his-tological findings and gross appearance of the perianal mass, an aggressive form of adenocarcinoma was diagnosed and a poor prognosis was expected. An end-on colostomy was successfully performed to improve quality of life, which had been decreased by the dyschezia. Postoperative fecal evacuation was well-man-aged by the owner using a disposable colostomy bag in addition to a previously reported flange and drainable pouch. The dog survived for three months and had a satisfactory quality of life. Surgery and postoperative management in such cases will be helpful in the treatment of defecation disorders in animals.