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Table 2 Clinical characteristics of MM with EMP

From: Analysis of clinical features, treatment response, and prognosis among 61 elderly newly diagnosed multiple myeloma patients: a single-center report

Characteristics Overall (n = 19) A (≥65) B (≥75)
Age 72 (65–81) 69 (65–73) 77 (75–81)
Gender, n (%)
 Male 10 (52.6 %) 7 (36.8 %) 3 (15.8 %)
 Female 9 (47.4 %) 5 (26.3 %) 4 (21.1 %)
Heavy chain, n (%)
 IgG 9 (47.4 %) 6 (31.6 %) 3 (15.8 %)
 IgA 6 (31.6 %) 3 (15.8 %) 3 (15.8 %)
Light chain, n (%)
 κ light chain 1 (5.3 %) 1 (5.3 %) 0
 λ light chain 2 (10.6 %) 1 (5.3 %) 1 (5.3 %)
β2MG ≥ 5.5 mg/l, n (%) 14 (73.7 %) 10 (52.6 %) 4 (21.1 %)
Sites of EMP, n (%)
 1. Spinal canal 10 (52.6 %) 8 (42.1 %) 2 (10.5 %)
 2. Pleura 5 (26.3 %) 0 5 (26.3 %)
 3. Soft tissue 2 (10.5 %) 2 (10.5 %) 0
More than two sites, n (%) 4 (21.1 %) 4 (21.1 %) 0
Plasma cell percentage, n (%) 37.2 (2–91) 37 (2–91) 37.5 (18.5–46.5)
Abnormal genetics testing, n (%)
 G-banded karyotype testing 2 (33.3 %) 1 (16.7 %) 1 (16.7 %)
 FISH 4 (66.7 %) 0 4 (66.7 %)