Uterine Cancer in Cats

Common info

Uterus is a significant organ of the female cat.  When tissues abnormally grow in endometrium and outside the uterus,  benign tumors develop, such as fibroids, leiomyomas, and fibromas. In some cases, however, they may also develop into several forms of cancer (with less possibility), such as adenocarcinoma and leiomyosarcoma.


There are numerous causes of uterine cancer, including the hormone disorder produced by an ovary, congenital abnormality, injury or inflammation in the uterus, immune response disorder, and direct contact with chemical substances and pregnancy.


Any types of uterine tumors, whether benign or malignant, can cause effects to other parts of the body as when they grow and become bigger, they may compress any main organs in the abdomen, for instance, stomach, intestine or bladder, causing the abdomen to enlarge notably. All these will make the uterus weakened and sensitive to infection.


  • Lethargy
  • Difficulty urinating
  • Frequent urination
  • Blood in urine
  • Abnormal thirst
  • Loss of appetite
  • Weight loss
  • Vomiting
  • Bloating
  • Constipation
  • Vaginal discharge  

The symptoms found in uterine cancer in cats include lethargy, difficulty urinating, frequent urination, blood in urine, abnormal thirst, loss of appetite, weight loss, vomiting, bloating, constipation, vaginal discharge, and licking of vaginal area.

Treatment and Prevention

There are several kinds of treatments as follows

1.Removal of the entire reproductive system

This is the best treatment because removing the uterus will eliminate the uterus-secreted hormone, the cause of the tumor.


If the tumor is becoming cancer, the vet may prescribe chemotherapy to kill it, along with the removal of the reproductive system. 


If inflammation is in the uterus, the vet may prescribe antibiotics to both remove and prevent bacterial infection.


  1. Wagwalking | Uterine Tumors
  2. Miller, M. A., Ramos-Vara, J. A., Dickeson, M. F., Johnson, G. C., Pace, L. W., Kreeger, J. M., Turk, J. R. 2003. Uterine Neoplasia in 13 Cats. Journal of Veterinary Diagnostic Investigation, 15(6), 515–522.
  3. Anderson, C., & Pratschke, K. 2011. Uterine adenocarcinoma with abdominal metastases in an ovariohysterectomised cat. Journal of Feline Medicine & Surgery, 13(1), 44–47.
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