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J Vet Diagn Invest ; 36(1): 103-107, 2024 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-37997354

RESUMEN

A 9-y-old Mangalarga Marchador gelding was referred to a veterinary hospital because of a swelling on the upper right side of the neck. Ultrasound examination revealed a multilocular structure adjacent to the thyroid gland with low echogenic content suggestive of fluid. The mass was removed surgically. Histologically, the cystic cavities in the surgical sample were filled with abundant eosinophilic secreta and lined by cuboidal, segmentally ciliated, columnar epithelium with interspersed goblet cells. Segmental crowding of the multilayered lining of the cyst was noted. Immunohistochemistry suggested the presence of both C cells and follicular cells, given the positivity of the immunomarkers calcitonin and TTF-1, respectively. The histogenesis of ultimobranchial cysts is uncertain. Based on clinical, histopathologic, and immunohistochemical identification, the cystic structure in this case is compatible with an ultimobranchial body cyst.


Asunto(s)
Quistes , Enfermedades de los Caballos , Cuerpo Ultimobranquial , Masculino , Caballos , Animales , Cuerpo Ultimobranquial/patología , Quistes/diagnóstico , Quistes/veterinaria , Quistes/patología , Glándula Tiroides/patología , Epitelio/patología , Cuello/patología , Enfermedades de los Caballos/diagnóstico por imagen , Enfermedades de los Caballos/cirugía
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