Feline myeloma-related disorder presenting as multiple subcutaneous extramedullary plasmacytomas: a Case Report

Abstract

A 12-year-old neutered male cat was presented to our hospital with the primary complaint of multiple masses on the dorsal skin of the lumbar region. A fine needle aspiration was performed, which revealed numerous round cells, but a definitive diagnosis could not be established. Blood chemistry showed mildly elevated serum globulin, and no significant findings were observed in thoracic radiography or abdominal ultrasonography. All 11 masses were surgically excised under general anesthesia and histopathology confirmed a diagnosis of feline myeloma-related disorder (MRD). Following surgery, the patient was started on a treatment regimen of cyclophosphamide and prednisolone, but the cat succumbed to systemic metastases 132 days after the diagnosis.