Oral Lesions in cats
Oral lesions in cats may be associated with chemical burns (such as potpourri or incense), feline stomatitis, trauma, foreign bodies, neoplasia (cancer) or viral disease. Calicivirus has been associated with oral bleeding and ulceration.
An oronasal fistula is an oral lesion with a communication between the oral cavity and the respiratory track. The consequence of this lesion can be life threatening.
Diagnosis of the cause of oral lesions can be challenging!
Dental radiology, computed tomography and tissue biopsy can be helpful in ruling out major causes of oral lesions. Fungal, bacterial culture and sensitivity testing of deep lesions can also be very useful for diagnosis and treatment. Specific webpages have been devoted to tongue lesions and traumatic occlusal lesions for additional reading.
Clinical cases of oral lesions.

Central oral ulcer (above) was biopsied and an inflammatory diagnosis was made. The cause was not determined.
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Full thickness biopsy site was sutured closed using 4-0 Monocryl.
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Oral lacerations were identified and dental radiographs revealed severe periapical pathology of the adjacent upper molar and upper fourth premolar teeth.
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Biopsy of this defect resulted in the diagnosis of squamous cell carcinoma.
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Biopsy site mucosal tissue edges were apposed with 5-0 chromic catgut sutures.
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Oronasal fistulas are communications between the oral cavity and the respiratory track.
This one was biopsied for neoplasia prior to surgical closure.
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Intraoperative view of the above oronasal fistula.
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The oronasal fistula was closed in two layers.
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Cat Dental Care
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