Back to Fact Sheets. Download PDF. This is described as an uncommon tumour but we do seem to see a significant number of patients with this disease, no doubt partly due to this being a special interest in our clinic. In a number of cases this is the only site where the tumour is growing, but in other cases they may spread to the lymph nodes or via the bloodstream to places like the lungs, liver and spleen. Sometimes these tumours are associated with the production of a hormone that causes excessive drinking and urination.
What is Anal Gland Adenocarcinoma in Pets?
Anal sac adenocarcinoma - Wikipedia
By Dr. The average age at diagnosis is nine to eleven years. Some dogs with AGASACA present with signs related to the mass itself, such as a swelling in the perianal region, a mass palpated on routine rectal exam, scooting, or straining to defecate. These hypercalcemic dogs may be polyuric and polydypsic. Therefore, prior to surgery and other therapies, staging with three view chest x-rays and an abdominal ultrasound are recommended. The sublumbar lymph nodes are one of the most common sites for metastasis Figure 1.
Canine Anal Sac/Gland Adenocarcinoma
An anal sac adenocarcinoma is an uncommon and aggressive malignant tumor found in dogs that arises from the apocrine glandular tissue of anal sac. The disease exists in cats as well, but is much less common in that species. Apocrine gland anal sac adenocarcinomas first appear as small lumps associated with one of the anal sacs rarely bilateral , but they can grow to a large size.
The most common malignant tumor of the perianal region is the anal sac gland carcinoma accounting for These tumors are locally invasive and metastasize early in the course of the disease. There does not appear to be a breed or sex predilection for this tumor and no consistent causative factors have been noted.