CPB Ljubljana 2018 course book

Boost 2 x 5Gy

• 621 patients T1–T2, N0-1 • EBRT 44 Gy, + 2 x 5 Gy HDR. • two orthogonal films • plastic tubes • 1 plane 89%, 3 lines 84% • FU 10.3 years

11%

10-year breast failure 7.4%

Small-volume implantation (V100<45cc) and DCIS correlated with local relapse

• Cosmetic results: excellent 22% good 58%, fair 15%, and poor 5%

Quéro L, Guillerm S, Taright N, 10-Year follow-up of 621 patients treated using high-dose rate brachytherapy as ambulatory boost technique in conservative breast cancer treatment. Radiother Oncol. 2017;122(1):11-16 When surgical bed cannot be accurately localized, the boost volume should be large to avoid local recurrence.

16%