Extrapulmonary metastases impact survival outcomes of thermal ablation for colorectal lung oligometastases: A multicenter study

Table 4 Rates of progression-free survival and overall survival according to the type of extrapulmonary metastasis

	None, % (SE)	Liver, % (SE)	Bone, % (SE)	Abdominal cavity, % (SE)	Pelvic cavity, % (SE)
PFS
1 years	65.4 (0.034)	57.1 (0.059)	49.0 (0.136)	47.6 (0.109)	44.4 (0.117)
3 years	31.0 (0.035)	18.7 (0.048)	16.3 (0.105)	4.8 (0.046)	16.7 (0.088)
5 years	27.3 (0.035)	4.0 (0.037)	0.0	0.0	0.0
OS
1 years	96.4 (0.013)	87.1 (0.040)	64.3 (0.128)	66.7 (0.103)	88.9 (0.074)
3 years	71.0 (0.033)	68.6 (0.055)	21.4 (0.110)	14.3 (0.076)	33.3 (0.111)
5 years	53.0 (0.048)	43.1 (0.085)	0.0	0.0	0.0

OS: Overall survival; PFS: Progression-free survival. This table illustrates the prognostic impact of different extrapulmonary metastasis patterns on survival outcomes in patients undergoing image-guided thermal ablation. Patients without extrapulmonary metastasis demonstrated the most favorable progression-free survival and overall survival across all time points. In contrast, those with bone, abdominal, or pelvic cavity metastases had markedly worse outcomes, with 5-year survival rates approaching 0%. These findings underscore the prognostic importance of metastasis type in risk stratification and treatment planning.