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Table 5 Constraints for organs at risk in adjuvant radiotherapy of early breast cancer

From: Hypofractionated irradiation of infra-supraclavicular lymph nodes after axillary dissection in patients with breast cancer post-conservative surgery: impact on late toxicity

Organ at risk

Normofractionation 2 Gy per fraction\5fr\week

Hypofractionated schedule 2,3 Gy per fraction\4 fr\week

LADCA

V20Gy = 0 %

V19Gy = 0 %

Heart

V20Gy = 10 % V40Gy =5 %

V19Gy = 0 %

Ipsilateral Lung

V20Gy = 25 % (exclusive periclavicular LN)

V19Gy = 25 % (exclusive periclavicular LN)

 

V20Gy = 35 % (inclusive periclavicular LN)

V19Gy = 35 % (inclusive periclavicular LN)

Spinal cord

Max 45 Gy

Max 42 Gy

  1. LADCA left anterior descending coronary artery, LN lymph nodes