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Table 1 Characteristics of the patients undergoing the first PM for lung metastases from RPS (n = 24)

From: Survival and prognostic factors in patients undergoing pulmonary metastasectomy for lung metastases from retroperitoneal sarcoma

Variables Results
Age (years)
 Median (range) 56 (36–70)
Sex
 Male 4 (16.7%)
 Female 20 (83.3%)
Histological subtypes of primary RPS
 Leiomyosarcoma 19 (79.2%)
 Dedifferentiated liposarcoma 3 (12.5%)
 Others 2 (8.3%)
Disease-free interval (months)
 Median (range) 16.8 (1.6–139.5)
Extent of lung metastasis
 Unilateral 8 (33.3%)
 Bilateral 16 (66.7%)
Local recurrence and/or extrapulmonary metastasis with or before lung metastasis
 Yes 11 (45.8%)
 No 13 (54.2%)
Preoperative chemotherapy for lung metastasis
 Yes 9 (37.5%)
 No 15 (62.5%)
NLR immediately before the first PM
 Median (range) 2.32 (1.12–7.52)
NLR immediately before the most recent PM
 Median (range) 2.30 (0.83–7.52)
  1. PM Pulmonary metastasectomy, RPS Retroperitoneal sarcoma, NLR Neutrophil-to-lymphocyte ratio