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Dysgerminoma in a rhesus monkey: morphologic and biological features
Journal of Medical Primatology
|January 1, 1978
Summary
A rare ovarian dysgerminoma in a rhesus macaque was surgically treated. Despite multiple surgeries, metastatic lesions led to the animal's euthanasia, highlighting the aggressive nature of this rare tumor.
Area of Science:
- Reproductive biology
- Veterinary oncology
- Primate research
Background:
- Ovarian tumors can affect reproductive health in non-human primates.
- Dysgerminoma is a rare germ cell tumor with potential for metastasis.
Observation:
- A female Macaca mulatta with an ovarian tumor underwent surgical removal.
- Metastatic lesions were observed and surgically removed at 26 and 28 months post-excision.
- Additional metastatic lesions necessitated euthanasia at 31 months.
Findings:
- Initial histological evaluation was inconclusive for tumor origin.
- Advanced techniques including transmission electron microscopy, lymphocyte marker studies, and hormone assays confirmed the diagnosis of dysgerminoma.
- The tumor exhibited metastatic potential despite multiple surgical interventions.
Implications:
- This case highlights the challenges in diagnosing and managing rare ovarian neoplasms in primates.
- Understanding the behavior of dysgerminoma in Macaca mulatta can inform veterinary oncology practices.
- Further research into primate reproductive cancers is warranted.