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How to deal with changing anatomy?*
• Call doctor before treatment
 Change in atelectases
 GTV and/or CTV outside PTV
• Contact doctor that day or the day after
 Mild tumor progression
 Tumor regression
• Contour changes (physicist)
 >2 cm
 >1cm H&N and extremities
*Inspired by:
INTRA THORACIC ANATOMICAL CHANGES FOR LUNG CANCER PATIENTS DURING THE
COURSE OF IRRADIATION: HOWTO RESPOND?
S. Conijn1 , J. Belderbos1 , J. Knegjens1 , M. Rossi1 , J. J. Sonke1 , P. Remeijer1