No abstract

An 8-year-old, castrated male, domestic cat presented with acute dyspnea due to a tracheal mass caudal to the larynx. Debulking surgery via a tracheotomy immediately improved her respiratory status, and the cat was discharged on the same day. The resected mass was diagnosed as a diffuse large B-cell lymphoma by histopathology, immunostaining and clonality analysis. Based on cytology, COP therapy (16 times, 5 cycles) was initiated on the day of surgery, followed by doxorubicin treatment (4 times). The cat is still alive without recurrence 958 days postoperatively.

A 9-year-old castrated male domestic cat with sudden onset of extarahepatic biliary obstruction underwent cholecystoduodenostomy. A simultaneous liver biopsy with immunohistochemistry led to a diagnosis of large granular lymphocytic (LGL) lymphoma with hepatocytotropism, which was considered as primary hepatic disease from the subsequent clinical course. Hyperbilirubinemia temporarily improved after surgery but relapsed over the next month. Treatment with L-asparaginase or ACNU resulted in clinical improvement twice, but the cat died of relapse on Day 299 (postoperative day 294). This is the first report of a treated case of feline LGL lymphoma with hepatocytotropism.

A 15 year-old spayed female domestic cat presented with a subcutaneous mass on the ventral side of the external ear canal. A salivary gland tumor was suspected, and its size continued to increase. On day 49, a mass protruding from the ventral edge of the parotid gland was surgically excised. The mass was diagnosed as an oncocytoma by histopathological examination, histochemical staining, and immunostaining for cytochrome C. No recurrence or metastasis has been observed for 17 months after the operation. This is the first report of parotid gland oncocytoma in a cat with long-term postoperative survival.

No abstract