<abstract xmlns="http://www.w3.org/1999/xhtml">

<p>The present case report aims to describe a postmortem finding of a colloid goiter, without obvious clinical signs of endocrine disease in a 30-year-old American black bear (<italic>Ursus americanus</italic>) from the “Zoo” in the city of Sofia, Bulgaria. A clinical examination due to a bad general condition was performed under anesthesia and a computed tomography was conducted. After the established irreversible spondylarthrosis changes the bear was euthanized. Postmortem, the thyroid gland was pathologically examined and typical findings for a colloid goiter were observed. Hibernating mammals such as the American black bear have been shown to enter a state of physiological hypothyroidism during hibernation. Hormonal signals from the thyroid gland have been suggested to be a key mediator of hibernation. From the presented case could be assumed that the captive life conditions and the prolonged life of the zoo bears may affect the function of their thyroid gland.</p>
</abstract>

The present case report aims to describe a postmortem finding of a colloid goiter, without obvious clinical signs of endocrine disease in a 30-year-old American black bear (Ursus americanus) from the “Zoo” in the city of Sofia, Bulgaria. A clinical examination due to a bad general condition was performed under anesthesia and a computed tomography was conducted. After the established irreversible spondylarthrosis changes the bear was euthanized. Postmortem, the thyroid gland was pathologically examined and typical findings for a colloid goiter were observed. Hibernating mammals such as the American black bear have been shown to enter a state of physiological hypothyroidism during hibernation. Hormonal signals from the thyroid gland have been suggested to be a key mediator of hibernation. From the presented case could be assumed that the captive life conditions and the prolonged life of the zoo bears may affect the function of their thyroid gland.

A Postmortem Finding of a Colloid Goiter in an American Black Bear (<italic>Ursus Americanus</italic>)

Faculty of Veterinary Medicine, Department of Internal Noninfectious Diseases, Pathology and Pharmacology

Faculty of Veterinary Medicine, Department of Anatomy, Physiology and Animal Science

Faculty of Veterinary Medicine, Department of Surgery, Radiology, Obstetrics and Gynecology

Acta Veterinaria

This work is licensed under the Creative Commons Attribution 4.0 International License.

A Postmortem Finding of a Colloid Goiter in an American Black Bear ()

The present case report aims to describe a postmortem finding of a colloid goiter, without obvious clinical signs of endocrine disease in a 30-year-old...

A Postmortem Finding of a Colloid Goiter in an American Black Bear (Ursus Americanus)

Article Category: Case report

Publicado en línea: 24 jun 2024

Páginas: 322 - 330

Recibido: 23 mar 2024

Aceptado: 07 jun 2024

DOI: https://doi.org/10.2478/acve-2024-0023

Palabras clave
American black bear, colloid goiter, computed tomography, thyroid gland,

© 2024 Georgi Stoychev Popov et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

A Postmortem Finding of a Colloid Goiter in an American Black Bear (Ursus Americanus)

Article Category: Case report

Publicado en línea: 24 jun 2024

Páginas: 322 - 330

Recibido: 23 mar 2024

Aceptado: 07 jun 2024

DOI: https://doi.org/10.2478/acve-2024-0023

Palabras claveAmerican black bear, colloid goiter, computed tomography, thyroid gland,

© 2024 Georgi Stoychev Popov et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

Palabras clave
American black bear, colloid goiter, computed tomography, thyroid gland,