Peer-reviewed veterinary case report
Ovarian teratoma and granulosa cell tumor in two mares.
- Journal:
- The Cornell veterinarian
- Year:
- 1991
- Authors:
- Panciera, R J et al.
- Affiliation:
- College of Veterinary Medicine
- Species:
- horse
Plain-English summary
This study looked at two female horses (mares) that had both an ovarian teratoma (a type of tumor that can contain different types of tissue like bone or teeth) and a granulosa cell tumor (another type of tumor that can affect hormones and reproductive behavior) at the same time. Having both tumors can make it hard for veterinarians to diagnose the issue correctly because they can look similar on the outside. However, the teratoma might have hard parts like bone or teeth, while the granulosa cell tumor can cause changes in behavior and reproductive health due to hormone effects. A careful examination of the tumors after surgery can help identify both issues, even if one is more obvious than the other. The outcome for these mares was not specified in the abstract.
Abstract
Simultaneous and successive occurrence of ovarian teratoma and granulosa cell tumor is reported in 2 mares. Simultaneous occurrence of the tumors may obscure clinical diagnosis. Whereas size, unilaterality, and the cystic nature of each may be similar, differentiating features include the potentially palpable presence of bone, cartilage, or teeth in teratoma, and the hormone-induced behavioral and reproductive effects of granulosa cell tumors. Thorough examination of surgical specimens may reveal the existence of a neoplastic process, previously obscured by the more obvious presence of another.
Find similar cases for your pet
PetCaseFinder finds other peer-reviewed reports of pets with the same symptoms, plus a plain-English summary of what was tried across them.
Search related cases →Original publication: https://pubmed.ncbi.nlm.nih.gov/1993392/