Table 2 Radiation therapy details

Whole-breast irradiation / Chest wall irradiation

400/34

  50 Gy in 25 fractions

433

  54 Gy in 27 fractions

1

Irradiation to the regional lymph nodes (yes/no)

45/388

  supraclavicular region of affected side

    50 Gy in 25 fractions

26

    40 Gy in 20 fractions

5

  supraclavicular and parasternal region of affected side

    50 Gy in 25 fractions

4

    45 Gy in 23 fractions

1

    40 Gy in 20 fractions

8

  supraclavicular and parasternal region of bilateral side

    40 Gy in 20 fractions

1

Boost to tumor bed (yes/no)

31/403

    9 Gy in 3 fractions

30

    6 Gy in 3 fractions

1