2017_SBRT_Course Book

Frequency of re-RT for NSCLC

NSCLC Patiens treated with EBRT

Patients with Re-irradiation

Study

Green Cancer 1982

29 (3.7%)

774

Jackson Med J Aust 1987

22 (8.1%)

270

Gressen Am J Clin Oncol 2000

23 (1.5%)

1500

• Large variability in the literature • Re-irradiation for recurrent NSCLC is rarly performed • Re-irradiation is performed in highly selected patients

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Definition of re-irradiation

Scenario 2

Scenario 3

Scenario 1

Overlap in serial organ

Overlap in parallel organ

No high-dose overlap

Ø Cumulative EQD2 doses for interpretation Ø Provided by few studies

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