Significance of preoperative peripheral blood neutrophil-lymphocyte ratio in predicting postoperative survival in patients with multiple myeloma bone disease

Table 1 General information of the 82 multiple myeloma bone disease patients who underwent surgical treatments

Characteristic	Value n (%) or n [SD]
Age (yr)	60.33 [9.620]
Gender
Male	44 (53.7)
Female	38 (46.3)
ISS stage
ISS-I	15 (18.3)
ISS-II	37 (45.1)
ISS-III	30 (36.6)
Number of lesions
1	53 (64.6)
2	18 (22.0)
≥ 3	11 (13.4)
Site of lesion
Spine	56 (68.3)
Long bone of limb	19 (23.2)
Soft tissue	7 (8.5)
Isotype
IgA	23 (28)
IgD	3 (3.7)
IgG	45 (54.9)
Light chain κ/λ	11 (13.4)
Preoperative chemotherapy
Yes	48 (58.5)
No	34 (41.5)
Postoperative chemotherapy
Yes	71 (86.6)
No	11 (13.4)
Preoperative radiotherapy
Yes	6 (7.3)
No	76 (92.7)
Time from a diagnosis to surgery (mo)	19.48 [26.69]
Operation scheme
Complete excision1	9 (11)
Partial excision/intramedullary curettage2	72 (87.8)
Tissue biopsy3	1 (1.2)
Autologous stem cell transplantation
Yes	20 (24.4)
No	62 (75.6)
POS (mo)	27.03 [21.31]
Total survival (mo)	46.63 [31.04]

¹The soft-tissue mass extended resection or partial rib resection.

²Intralesional resection and filling with polymethylmethacrylate bone cement in long bone of limb metastases or incomplete mastectomy in spinal metastases.

³Percutaneous biopsy.

SD: Standard deviation; ISS: International staging system; POS: Postoperative survival.