Fig. 1From: Characteristics and prognosis of primary pulmonary osteosarcoma: a pooled analysisOverall survival in patients with primary pulmonary osteosarcoma stratified by tumor size (a; P = 0.009), metastasis (b; P = 0.017), and surgical performance (c; P < 0.001). Abbreviations: HR, hazard ratio; CI, confidential interval; No/NA, none or not applicableBack to article page