Course book Advanced Treatment Planning 2018

Hard data: microscopic extensions in lung cancer

N=32

30% patients with low grade tumors (now treated with SBRT with few mm margins), have spread at 15 mm distance

100

90

80

70

60

100%

50

Deformation corrected

50%

40

25%

30

20

% cases with extensions

10

0

0 5 10 15 20 25 30 35 40 45 distance from GTV [mm]

Having dose there may be essential!

Slide courtesy of Gilhuijs and Stroom, NKI