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Peer-reviewed veterinary case report

Congenital oropharyngeal teratoma in a neonatal goat and brief review of extragonadal teratomas in animals.

Journal:
Journal of veterinary diagnostic investigation : official publication of the American Association of Veterinary Laboratory Diagnosticians, Inc
Year:
2026
Authors:
Lee, Sang-Joon et al.
Affiliation:
Keyprime Research · South Korea

Abstract

Teratomas originate from pluripotent germ cells and differentiate into the 3 germ cell layers: endoderm, mesoderm, and ectoderm. Hence, these tumors arise most often in the gonads. Extragonadal teratomas are rare in veterinary medicine. Congenital oropharyngeal teratoma, also known as epignathus, is a neoplasm that has been reported in humans and a few veterinary species. We describe the clinical, gross, cytologic, and histopathologic features of an oropharyngeal teratoma in a neonatal Boer × Nigerian Dwarf goat that died within 4 h of birth, and briefly review extragonadal teratomas in veterinary species.

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Original publication: https://pubmed.ncbi.nlm.nih.gov/41612690/