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Cutaneous plasmacytoma with Mott cell differentiation in a dog
Cheryl L Auch1, Alyona Michael2
1Departments of Veterinary Pathology, College of Veterinary Medicine, Iowa State University, Ames, IA, USA.
Summary
A rare canine plasma cell tumor with Mott cell differentiation was identified in a Yorkshire Terrier. This cytologic and histopathologic study describes a unique case of this neoplasm in veterinary medicine.
Area of Science:
- Veterinary Pathology
- Canine Neoplasia
- Cytopathology
Background:
- Plasma cell tumors are common in dogs, typically affecting bone marrow or extramedullary sites.
- Mott cells, characterized by intracytoplasmic immunoglobulin inclusions (Russell bodies), are typically associated with chronic inflammation or certain types of plasma cell neoplasms.
- Differentiation between plasma cell tumors and B-cell lymphomas can be challenging based on cytology alone.

