Oronasal Fistula in a 53-year-old Hippopotamus

Wittschen, Petra; Ochs, Andreas; Gruber, Achim D.

doi:10.1016/j.jcpa.2007.06.009

Cited by 4 publications

(1 citation statement)

References 6 publications

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“…Reports of neoplasms affecting the common hippopotamus are even more scarce, with a few cases described, including a systemic histiocytic sarcoma (1), a metastatic adenocarcinoma of unknown origin (13), a thyroid adenoma (14), and two cases of pheochromocytoma (2, 3). Our goal is to describe the first reported case of a metastatic oral squamous cell carcinoma in a common hippopotamus raised in captivity at the Zoo-Botanic Foundation in Belo Horizonte, Brazil.…”

Section: Introductionmentioning

confidence: 99%

Metastatic oral squamous cell carcinoma in a captive common hippopotamus (Hippopotamus amphibius)

Oliveira¹,

Arenales²,

Carvalho³

et al. 2018

BJVP

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Oliveira, et al.; Metastatic oral squamous cell carcinoma in a captive common hippopotamus (Hippopotamus amphibius). Braz J Vet Pathol, 2018, 11(2), 64 -67. DOI: 10.24070/bjvp.1983 AbstractReported cases of neoplasia affecting hippopotamus are very scarce. This report describes a metastatic oral squamous cell carcinoma in a captive 44-year-old male common hippopotamus (Hippopotamus amphibius) that developed progressive loss of appetite, fibrinohemorrhagic oral discharge, and progressive weight loss. Gross, cytological, and histopathological findings were compatible with a conclusive diagnosis of an invasive oral squamous cell carcinoma with metastasis in the lung, adrenal, and spleen. To the best of our knowledge this is the first report of squamous cell carcinoma in a common hippopotamus.

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Section: Introductionmentioning

confidence: 99%

Metastatic oral squamous cell carcinoma in a captive common hippopotamus (Hippopotamus amphibius)

Oliveira¹,

Arenales²,

Carvalho³

et al. 2018

BJVP

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Proliferative Thyroid Lesions and Hyperthyroidism in Captive Fishers (Martes pennanti)

Bunting

Garner²,

Abou‐Madi³

et al. 2010

Journal of Zoo and Wildlife Medicine

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Diseases of the thyroid gland are common in many zoo species, but there are few descriptions of thyroid dysfunction in Mustelidae. A 7-yr-old, captive-bred female fisher (Martes pennanti) with progressive alopecia was diagnosed with clinical hyperthyroidism based on persistent elevation of both total and free serum thyroxine and triiodothyronine, ultrasound examination, and histologic evidence of adenomatous hyperplasia. Four additional geriatric adult fishers (two male and two female) were identified with thyroid adenomatous hyperplasia in a review of 23 postmortem records. Banked sera were available for thyroid hormone testing from three of the four necropsy cases. Total and free thyroxine were elevated in four of four animals tested, and triiodothyronine was elevated in two of three animals tested. Necropsy findings in four cases identified cardiac hypertrophy, congestive heart failure, and vascular lesions consistent with hypertension; complete tissues were not available from the remaining case. Clinical and subclinical hyperthyroidism may be a common but overlooked condition of captive fishers.

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CEREBELLAR AND MESENCEPHALON NEOPLASIA IN A NILE HIPOPPOTAMUS (HIPPOPOTAMUS AMPHIBIOUS)

Schiaffino

Sander

Bacares

et al. 2016

Journal of Zoo and Wildlife Medicine

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A 52-yr-old female Nile hippopotamus ( Hippopotamus amphibious ) was presented for acute onset anorexia, depression, lethargy, instability, and weakness in the pelvic limbs. Clinical signs were rapidly progressive, despite empiric therapy with anti-inflammatory medications, resulting in the death of the animal. Gross necropsy evaluation revealed two tan, firm masses in the cerebellum and mesencephalon and a single mass in the right cranial adrenal gland. All three masses had a similar histologic morphology, and immunohistochemical investigation confirmed the general diagnosis of an adenocarcinoma, but the exact cell of origin remains unclear. In addition, there was evidence of neuroendocrine differentiation in the adrenal gland and not in the brain. These findings suggest either two distinct neoplastic populations or a metastasizing adenocarcinoma with focal endocrine differentiation. In dogs, anal sac and clitoral adenocarcinomas have been reported to undergo focal endocrine differentiation, and both can cause widespread metastasis while the primary lesion can be small. A small neoplasm of these glands may have been missed on gross examination.

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Oronasal Fistula in a 53-year-old Hippopotamus

Cited by 4 publications

References 6 publications

Metastatic oral squamous cell carcinoma in a captive common hippopotamus (Hippopotamus amphibius)

Metastatic oral squamous cell carcinoma in a captive common hippopotamus (Hippopotamus amphibius)

Proliferative Thyroid Lesions and Hyperthyroidism in Captive Fishers (Martes pennanti)

CEREBELLAR AND MESENCEPHALON NEOPLASIA IN A NILE HIPOPPOTAMUS (HIPPOPOTAMUS AMPHIBIOUS)

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