CPB Ljubljana 2018 course book

Limitations of endocavitary radiation

Bartelink H. Radiat Oncol August 2012

• Radiation is only given to the cavity • No margin can be added • The cavity is modified by the surgeon to create an sphere • Skin and chest wall can receive a high dose • No information about margins

Missed CTV

• The tumour is not in the centre of the lumpectomy • A safety margin of 15-20mm is needed, not only to the cavity • The cavity is a reference to draw the CTV, not the CTV.