Re-irradiation in lung disease by SBRT: a retrospective, single institutional study

Radiation Oncology

Table 6 Correlations of Local Control and index of survivals with variables

	LC	PFS	DSS	OS
^aHistology	0,6	0,3	0,3	0,3
^bStatus of patients	0,7	0,5	0,3	0,3
^cNumber of fractions	0,05	0,09	0,06	0,06
^dMedian EQD2 (10 GY) of re-irradiation	0,4	0,4	0,7	0,7
^eMedian BED2 (10) of re-irradiation	0,4	0,4	0,7	0,7
^fMedian EQD2 (10 GY) cumulative	0,03	0,03	0,1	0,1
^gMedian BED (10) cumulative	0,02	0,05	0,08	0,08
^hCHT after re-irradiation	0,2	0,09	0,8	0,8
ⁱMedian time between both treatments	0,4	0,5	0,6	0,6
^jMedian time of first progression of the disease	0,6	0,5	0,3	0,3

^a Histology: Adc(adenocarcinoma), Scc (Squamous cell carcinoma), Sclc (Small cell lung cancer), Pet+, Without Histology
^b Single Lesion vs. Multiple Lesions
^c Single Fraction vs. Multiple Fractions
^d EQD2(10) ≥83 Gy vs. < 83 Gy
^e BED(10) ≥100 Gy vs. < 100 Gy
^f Cumulative EQD2(10) ≥167 Gy vs. < 167 Gy
^g Cumulative BED (10) ≥200 Gy vs. < 200 Gy
^h CHT(Chemotherapy) after re-irradiatio: Yes vs. No
ⁱ Median time between both treatments ≥18 months Vs. < 18 months
^j Median time of the first progression of disease ≥10 months vs. < 10 months

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