Metastasectomy of Pulmonary Metastases from Osteosarcoma: Prognostic Factors and Indication for Repeat Metastasectomy

Table 1

Patient characteristics.

Patient characteristics	(%)	Mean (range)
Gender
Male	22 (60)
Location of primary tumor
Femur	25 (68)
Tibia	5 (14)
Humerus	4 (11)
Other (pubis, fibula, costa)	3 (8)
Age at first lung metastasectomy (year)		22 ± 14 (5–66)
Number of metastases at first metastasectomy		3.8 ± 3.9 (1–16)
Total number of metastases throughout treatment		4.6 ± 4.1 (1–16)
Maximal diameter of the tumor (cm)		1.4 ± 1.0 (0.4–3.6)
Number of metastasectomies (times)		1.7 ± 1.0 (1–4)
DFI (months)		12.3 ± 11.6 (0–45)

Mean follow-up: 67 ± 64 months (range, 10–270).
DFI: disease-free interval.