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Peer-reviewed veterinary case report

Teratocarcinoma of the ovary in a mare.

Journal:
Journal of the American Veterinary Medical Association
Year:
1988
Authors:
Frazer, G S et al.
Affiliation:
School of Veterinary Medicine · United States
Species:
horse

Plain-English summary

A 5-year-old Appaloosa mare was experiencing mild stomach pain and signs that suggested she might have a blockage in her intestines. A veterinarian found a large mass attached to her left ovary, along with smaller masses that were pressing on her rectum. After she passed away, an examination revealed many abnormal growths in her abdomen and some nodules in her lungs. The left ovary was enlarged and contained unusual materials like cartilage and hair. The findings confirmed that she had teratocarcinoma, a type of tumor.

Abstract

A 5-year-old Appaloosa mare had a history of mild intermittent abdominal discomfort and clinical signs that were suggestive of intestinal obstruction. Palpation per rectum revealed a large mass attached to the left uterine horn, with smaller masses extending dorsally and cranially and causing constriction of the rectum. At necropsy, numerous multilobulated masses were observed in the abdominal cavity and several nodules were seen in the lungs. The left ovary was large and contained both cartilage and hairlike material. Sections from all masses had similar histologic features and confirmed the tentative diagnosis of teratocarcinoma.

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Original publication: https://pubmed.ncbi.nlm.nih.gov/3192478/