Survival data for canine oral extramedullary plasmacytomas: a retrospective analysis (1996-2006).
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In a 10-year period, extramedullary plasmacytomas (EMP) represented 5.2% of all oral tumors found in the dog (16/302). These 16 oral EMP comprised 28.5% of all EMP within the same time period. Eleven dogs died with a median survival time of 474 days. Five dogs remain alive at the time of this writing. Dogs without complete surgical removal of the EMP and no adjuvant therapy had a median survival time of 138 days. Oral EMP have a clinical behavior consistent with EMP arising from other tissues. They have no obvious correlation with multiple myeloma, and complete surgical resection may be curative.