A 12-year-old spayed female toy poodle with gastrointestinal symptoms was presented to the primary care veterinarian. Based on laboratory findings, she was diagnosed with pyelonephritis and post-renal renal failure associated with distal ureteral swelling. The dog underwent partial ureteral resection and ureterobladder neoanastomosis for definitive pathological diagnosis and treatment of the ureteral swelling. The dog was diagnosed with extranodal peripheral T-cell lymphoma based on histopathology, immunostaining, and lymphocyte clonality studies. To our knowledge, this is the first report of canine primary ureteral lymphoma. This case highlights that primary ureteral lymphoma should be considered in the differential diagnosis of primary ureteral tumors in dogs. Further case series are needed to determine the prognosis and establish treatment options.

A 12-year-old spayed female cat, presented with a subcutaneous mass on the right forelimb and was diagnosed with extramedullary plasmacytoma base on a biopsy. Blood chemistry was normal, and the cat underwent limb amputation for tumor resection. Histopathology confirmed extramedullary plasmacytoma, revealing also axillary lymph node metastases. Adjuvant chemotherapy with melphalan and prednisolone was started 11 days post-surgery, but was discontinued 12 days later due to the development of nonregenerative anemia, severe thrombocytopenia, and neutropenia. The cat died 58 days after the presentation, presumably due to progressive anemia.