Ovarian carcinoma

From Dog
Mixed-type ovarian carcinoma in a dog[1]

Ovarian carcinoma are a malignant tumor of the canine ovary.

Unlike their benign counterpart, the papillary adenoma, these tumors are more aggressive and can grow to a significant size and result in peritoneal implantation metastasis[2].

Clinical symptoms are often nonspecific and may include anestrus in non-sterilized bitches, peritoneal effusion, abdominal pain and a palpable mass in the central abdomen[3].

A presumptive diagnosis is usually achieved with abdominal ultrasonography, showing a mass lesion effect.

A definitive diagnosis includes granulosa cell tumor, ovarian teratomas, paraovarian cysts and dysgerminoma[4].

Treatment is usually curative with ovariohysterectomy.


  1. University of Guelph
  2. Nielsen SW et al (1976) Tumours of the ovary. Bull World Health Organ 53(2-3):203-215
  3. Bertazzolo W et al (2012) Cytologic features and diagnostic accuracy of analysis of effusions for detection of ovarian carcinoma in dogs. Vet Clin Pathol 41(1):127-132
  4. Bertazzolo W et al (2004) Cytological features of canine ovarian tumours: a retrospective study of 19 cases. J Small Anim Pract 45(11):539-545