Demographics and characteristics of patients with SBP (n = 35) and EMP (n = 29)
| Patient demographics and characteristics . | SBP . | EMP . | P . |
|---|---|---|---|
| Male | 57% | 69% | NS |
| Median age, y | 65 (39-81) | 59 (34-83) | NS |
| Hemoglobin, g/L | 135 (102-172) | 149 (126-167) | .01 |
| Serum albumin, g/dL | 3.8 (2.5-5.0) | 4.3 (3.7-5.4) | .001 |
| Serum creatinine, mg/dL | 0.8 (0.5-1.4) | 0.8 (0.6-1.3) | NS |
| β2-microglobulin, mg/L | 2.1 (0.8-7.4) | 1.7 (0.8-2.6) | NS |
| Calcium, mg/dL | 9.5 (2.4-10.9) | 9.8 (8.9-10.6) | NS |
| Elevated lactate dehydrogenase | 16% | 6% | NS |
| Positive immunofixation and/or electrophoresis | 59% | 29% | .03 |
| Abnormal serum FLC ratio, n = 18 | 69% | 40% | — |
| Serum M-component, g/dL* | 0.8 (0.05-1.8) | 1.1 (0.5-1.5) | — |
| Urine M-component, g/dL* | 0.5 (0.05-0.5) | — | — |
| Immune paresis | 2% | 0% | NS |
| Disappearance of the M-component upon radiotherapy, n = 16 | 54% | 100% | — |
| BMPCs by conventional morphology, % | 2 (0-5) | 1 (0-5) | NS |
| Patient demographics and characteristics . | SBP . | EMP . | P . |
|---|---|---|---|
| Male | 57% | 69% | NS |
| Median age, y | 65 (39-81) | 59 (34-83) | NS |
| Hemoglobin, g/L | 135 (102-172) | 149 (126-167) | .01 |
| Serum albumin, g/dL | 3.8 (2.5-5.0) | 4.3 (3.7-5.4) | .001 |
| Serum creatinine, mg/dL | 0.8 (0.5-1.4) | 0.8 (0.6-1.3) | NS |
| β2-microglobulin, mg/L | 2.1 (0.8-7.4) | 1.7 (0.8-2.6) | NS |
| Calcium, mg/dL | 9.5 (2.4-10.9) | 9.8 (8.9-10.6) | NS |
| Elevated lactate dehydrogenase | 16% | 6% | NS |
| Positive immunofixation and/or electrophoresis | 59% | 29% | .03 |
| Abnormal serum FLC ratio, n = 18 | 69% | 40% | — |
| Serum M-component, g/dL* | 0.8 (0.05-1.8) | 1.1 (0.5-1.5) | — |
| Urine M-component, g/dL* | 0.5 (0.05-0.5) | — | — |
| Immune paresis | 2% | 0% | NS |
| Disappearance of the M-component upon radiotherapy, n = 16 | 54% | 100% | — |
| BMPCs by conventional morphology, % | 2 (0-5) | 1 (0-5) | NS |
NS, not significant.
Median values are given only for patients with detectable M-component in serum or urine. All EMP patients had undetectable Urine M-component. The number of patients with available information on serum FLC and M-component precludes statistical analysis.