Background and aim of the guideline:
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Aim:
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Guideline which is endorsed by many, that does NOT lead to larger
treatment volumes, but DOES lead to uniform delineation in the
various studies
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Primarily started with anatomical borders, based on theory.
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But, because of excellent local and regional controls: take care not to
increase treatment volumes!
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Made compromises, tried to reconstruct: what is the CTV we apparently
have been treating all these years …- does it fit the recurrence rates ?