Dogs and cats can function normally without these scent glands. Cancer can develop in the anal sac glands in dogs, but rarely in cats. In most cases, this tumor affects only one anal sac, but occasionally both left and right sacs are affected. Anal sac cancer is usually malignant and has a high tendency to spread to the other body parts. If it spreads, regional lymph nodes and the liver are commonly affected; however, the tumor can also spread to the lungs. Other signs may include a large visible swelling of the anal region, straining during bowel movements, thin ribbon-shaped stools, difficulty passing urine and arching of the back. Anal sac tumors can cause elevation of the calcium level in the blood, which results in increased thirst, increased urination, decreased activity, decreased appetite, weight loss, vomiting, muscle weakness and low heart rate.
Canine anal sac carcinomas – treatment and prognosis
Canine anal sac carcinomas – treatment and prognosis | Veterinary Practice
What are anal sac apocrine gland tumors? Anal sacs are paired structures, one sac on each side of the anus, which are lined by many glands. These glands produce liquid that is expelled with each bowel movement as a form of territorial marking. Anal sac tumors arise from the glands of the anal sac, and may be either benign known as anal sac adenomas or malignant known as anal sac adenocarcinomas.
Metastatic anal sac carcinoma with hypercalcaemia and associated hypertrophic osteopathy in a dog
Other treatment modalities include radiotherapy and chemotherapy, but the role of these treatments has not been clearly determined yet. Pre-operative medical support is provided as required. In particular, severe hypercalcaemia of malignancy HM; i. Management of HM is beyond the scope of this text and is widely detailed elsewhere Briefly, it is treated with a combination of fluid therapy 0.
The obnoxious substance coming out of the anal glands is supposed to help dogs mark their territory when they defecate. In reality, anal glands can cause all kinds of problems in dogs and occasionally in cats. They can get blocked, infected or even turn into cancer. Anal gland cancer was the sad fate of Conan, a sweet 9-year-old Lab.