Tumor of the Uterus in Dogs Uterine Tumor in Dogs Uterine tumors
in dogs are usually benign (non-spreading) and non-cancerous.
Uterine tumors are rare occurrences, usually affecting middle-
aged to older female dogs that have not been spayed. These
tumors arise from the uterine smooth muscle and epithelial
tissues -- the tissues that line the internal organs and
cavities. Dogs are most affected with leiomyomas, a benign
smooth muscle mass of tissue (neoplasm); 85 to 90 percent of
uterine tumors are this type. Fortunately, only 10 percent of
dogs have the malignant form of leiomyosarcoma. Symptoms and
Types Although there is often no sign of the disease, dogs with
these type of tumors may display: This type of tumor tends to
affect female dogs that have not been spayed. You will need to
give a thorough history of your dog's health and onset of
symptoms. Your veterinarian will perform a thorough physical
exam on your dog, taking into account the background history of
symptoms and possible conditions that might h