Population-based plasmacytoma frequency and activity accumulation are sparse. We analyzed frequency rates (IRs), IR ratios (IRRs), and 5-year qualifying activity for plasmacytoma coverall and by place [ndash] pearl (P-bone) and extramedullary (P-extramedullary) [ndash] in the Surveillance, Epidemiology and End Results (SEER) Program (1992[ndash]2004). For comparison, we included cases of binary myeloma (MM) diagnosed over the aforementioned instance punctuation in SEER. Incidence of MM (n = 23 544; IR 5·35/100 000 person-years) was 16-times higher than plasmacytoma coverall (n = 1543; IR = 0·34), and frequency of P-bone was 40% higher than P-extramedullary (P < 0·0001). The male-to-female IRRs for P-bone, P-extramedullary, and MM were 2·0, 2·6, and 1·5, respectively. For plasmacytoma and MM, IRs were maximal in Bl…

Tags: Population, United States