Seventy-eight dogs with symptoms of rhinitis were evaluated by computed tomography(CT)to differentiate nasal neoplastic diseases(neoplastic group)from non-neoplastic diseases(non-neoplastic group). The age distribution was significantly higher in the neoplastic group(p<0.001). Miniature Dachshunds were seen significantly more in the non-neoplastic group(p<0.001). The CT findings of osteolysis(nasal septum, hard palate, cribriformplate)and tumor infiltration(nasopharyngeal, orbit and surrounding subcutaneous tissues)were significantly more frequent in the neoplastic group(p<0.001). The median CT number was 50.8 HU in the neoplastic group and 38.0 HU in the non-neoplastic group(p<0.001), and the median standard deviation for each case was 9.3 HU in the neoplastic group and 24.1 HU in the non-neoplastic group(p<0.001). These results suggest that the CT numbers in neoplastic lesions are uniform compared to the numbers in non-neoplastic lesions. In conclusion, a neoplastic lesion can be suggested when CT images reveal osteolysis, aggressive invasiveness and homogeneous CT numbers.

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A 15-year-old intact female Beagle dog was brought to the hospital for a follow-up of previously treated skin squamous cell carcinoma. Presence of fasting hypoglycemia has led to a diagnosis of with islet beta cell carcinoma, which later was treated with partial pancreatectomy and diagnosed histopathologically. Preoperative assessment of the patient also revealed a mass of 1.8 x 1.8 cm at the right lobe of the thyroid and a small mass at the lesser curvature of the gastric pylorus. The former was cytologically confirmed as a thyroid tumor, and the gastric mass was histopathologically diagnosed as lymphoma of the stomach. Hyperinsulinemia and hypoglycemia persisted after the surgery, and the condition was controlled with dietary and prednisolone therapies. The gastrointestinal lymphoma was treated with doxorubicin with a complete remission achieved. The thyroid tumor was untreated and there were no signs of progression. The patient was in an excellent quality of life (QOL) for the 9 months before death with pulmonary edema associated with a cardiac failure.

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