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- Author or Editor: Cynthia M. Bell x
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A Holstein heifer calf was born during an uneventful parturition in the evening and received 4 quarts of maternal colostrum within 2 hours after birth. The following morning, the calf was bloated and repeated attempts by both the owners and the referring veterinarian to reduce the abdominal distension by orogastric intubation were unsuccessful. The referring veterinarian was able to extract a small amount of feces from the rectum. On the farm, the calf received treatment with flunixin meglumine, penicillin, and electrolytes.
The 24-hour-old calf was evaluated at the University of Wisconsin-Madison Veterinary Medical Teaching Hospital
Abstract
OBJECTIVE
To characterize clinical, radiographic, and histologic features of canine furcation cysts (CFCs) in dogs and to propose possible mechanisms of CFC development.
ANIMALS
20 client-owned dogs with CFCs biopsied between January 1, 2013, and December 31, 2017.
PROCEDURES
Medical records of the Center for Comparative Oral and Maxillofacial Pathology at the University of Wisconsin-Madison were retrospectively searched to identify records of dogs that had surgical biopsy specimens of mandibular or maxillary cavitary lesions diagnosed as odontogenic cysts and that met additional inclusion criteria. Biopsy sample submission records, medical records, clinical and radiographic images, and histologic samples were reviewed. Clinical, radiographic, and histologic features were evaluated.
RESULTS
Mean body weight and age of affected dogs were 23.5 kg (51.7 lb) and 8.2 years, respectively. All 20 dogs had a unilateral cyst, with the right (n = 13) or left (7) maxillary fourth premolar tooth affected and viable in all dogs. A predominant clinical sign was a fluctuant swelling of the buccal gingiva and mucosa overlying the CFC, and enucleation of the cyst lining, with or without extraction of the affected tooth, resolved the lesion in most dogs.
CONCLUSIONS AND CLINICAL RELEVANCE
Our findings indicated that CFC is an odontogenic cyst of uncertain etiopathogenesis and that complete evaluation of the clinical, radiographic, and histologic features of the lesion in affected patients is necessary to distinguish a CFC from other odontogenic cysts and tumors in dogs. Defining CFCs in terms of characteristic features permits accurate diagnosis and appropriate treatment of these previously unclassifiable odontogenic cysts in dogs.
Two Holstein bulls were examined at the University of Wisconsin Veterinary Medical Teaching Hospital because of failure to ejaculate. Both bulls had been housed at a commercial artificial insemination facility for several months prior to evaluation. The bulls were both 16 months old and weighed 452 kg (994 lb; bull 1) and 455 kg (1,001 lb; bull 2). The 2 bulls were three-quarters siblings (ie, they had the same sire and the same maternal grandsire [the sire and maternal grandsire were different bulls]). The bulls were born on separate farms in geographically disparate parts of North America, and both
