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| Parameter | N | % |
|---|---|---|
| Stage at time point of imaging | ||
| MM | 146 | 68.8 |
| SMM | 66 | 31.0 |
| Serum heavy chain | ||
| IgA | 48 | 23 Jan |
| IgD | 1 | 0.5 |
| IgG | 131 | 63.0 |
| IgG + IgA | 1 | 0.5 |
| IgM | 1 | 0.5 |
| None | 26 | 12 May |
| Light chain | ||
| Kappa | 120 | 58.0 |
| Lambda | 82 | 39.4 |
| Not determined | 5 | 2 Apr |
| ISS at diagnosis | ||
| Stage 1 | 89 | 47.6 |
| Stage 2 | 69 | 36.9 |
| Stage 3 | 29 | 15 May |
Abbreviations: Ig, immunoglobulin; ISS, International Staging System; MM, multiple myeloma; SMM, smoldering multiple myeloma.
