Peer-reviewed veterinary case report
Spontaneous repair of the atrophic contralateral ovary without ovariectomy in the case of a granulosa theca cell tumor (GTCT) affected mare.
- Journal:
- The Journal of veterinary medical science
- Year:
- 2003
- Authors:
- Hoque, Shafiqul et al.
- Affiliation:
- Department of Veterinary Medicine · Japan
- Species:
- horse
Plain-English summary
A 21-year-old thoroughbred mare was diagnosed with a granulosa theca cell tumor (GTCT) in her right ovary, while her left ovary was smaller than usual and not functioning properly. After being examined, it was found that the left ovary started to work normally again on its own, even without any treatment for the tumor on the right side. Nineteen months later, the left ovary had developed follicles of various sizes, indicating it had returned to normal activity. In contrast, the right ovary remained inactive and shrank over time. This case shows that some mares with GTCT can still resume their normal reproductive cycles without needing treatment for the affected ovary.
Abstract
A 21 year old thoroughbred mare with granulosa theca cell tumor (GTCT) in the right side and atrophic contralateral ovary was investigated in this study. After arrival at our laboratory on 10th December 1999, the clinical diagnosis of GTCT was examined by rectal palpation and ultrasonographic image of ovaries. Plasma from peripheral blood was collected in the breeding and non-breeding seasons for hormonal analysis. The results showed that the contralateral ovary regained normal activity without any treatment of the GTCT affected ovary and contained follicles showing different sizes 19 months later. However, the affected right ovary, which became smaller after 4 months, was totally inactive without any follicle. The observations clearly demonstrate that without any treatment of the GTCT affected ovary, a mare can return to her normal estrous cycle within a certain period in some GTCT cases.
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Search related cases →Original publication: https://pubmed.ncbi.nlm.nih.gov/12867740/