Image Quiz: A cat with a large tail mass
Can you discover the cause?
This two-year-old spayed female cat was presented for evaluation of a large (4- x 4.5- x 5.4-cm) tail mass. On palpation, the mass felt turgid and hot, appeared to be causing pain, and had serosanguineous discharge (see photo above). Radiographs revealed a large soft tissue swelling with lysis of caudal coccygeal vertebral bodies (see photo below).
An excisional biopsy, which was palliative, provided a large sample for histopathologic examination. Representative immunohistochemistry fields from the sample are shown below.
What's your diagnosis?
Presurgical evaluation and diagnostic imaging for canine mast cell tumors
November 7th 2024Ann Hohenhaus, DVM, DACVIM (Oncology, SAIM), delved into essential components of a diagnostic investigation of dogs with MCRs, including fine-needle aspiration and diagnostic imaging methods during her session at the NY Vet Show in New York, New York
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