Molecular Imaging 2017

Out field recurrences: Residual risk

RT of CT-positives only 96/988 LN

n=988

benign malignant

not treated: 47 malignant LN overtreated: 54 benign LN residual risk: 4,7% RT of PET-positives only: 84/ 988 LN not treated: 25 malignant LN overtreated: 20 benign LN residual risk: 2,5 %

CT neg PET neg 839

20

PET pos.

6

27

CT pos PET neg 40

5

RT of both PET- and CT-positives: 129/ 988 LN not treated: 20 malignant LN overtreated: 60 benign LN residual risk: 2,0 % overtreatment: increased by 54%

PET pos.

14

37

Alle

899

89

Vanuytsel