Your dog was diagnosed with Cutaneous Plasmacytoma. Benign-behaving round cell tumour of the skin. Excellent prognosis with surgical excision. Distinct from extramedullary plasmacytoma (which has more variable behaviour) and multiple myeloma. Compare 1 treatment option for dogs including Surgical Excision — with survival times, costs, and what to expect during treatment.
Pet Cancer Options — Cutaneous Plasmacytoma
Canine Oncology Treatment Guide
Cutaneous Plasmacytoma
Round Cell
About This Cancer
Cutaneous plasmacytoma is a round cell tumour arising from plasma cells — the mature B-lymphocytes that normally produce antibodies. When this tumour develops in the skin, it is almost always benign in behaviour, appearing as a small, solitary, raised lump. It is important to distinguish this from the more serious conditions of extramedullary plasmacytoma (which can develop in the mouth or digestive tract and behave more unpredictably) and multiple myeloma (a cancer of plasma cells within the bone marrow). The prognosis for cutaneous plasmacytoma is excellent: surgical removal is typically curative, and recurrence after complete excision is rare. Cocker Spaniels, Airedale Terriers, and Scottish Terriers appear to be at slightly higher risk.
Prognostic Factors(1)
Minimum Workup(4 steps)
Median Survival Time Comparison
How long the average patient survives with each treatment
Each treatment is rated by how much published research supports its use. Solid bars indicate stronger evidence; dashed bars mean less certainty.
Please note: All treatment data is sourced from published peer-reviewed literature. Survival times and cost figures are approximate guides. Your pet's individual factors — including tumour grade, stage, and overall health — will influence outcomes and should guide all treatment decisions. The strength-of-evidence rating reflects how much research exists, not how strongly a treatment is recommended. This tool is designed to help you have informed conversations with your veterinary oncologist, not to replace them. Costs shown are US referral centre estimates and may vary significantly by region.