PBI for Breast in Situ Carcinoma of Intermediate Low Risk As Local Adjuvant Treatment

"External beam radiation therapy uses high doses of radiation to destroy cancer cells and shrink tumors. A large machine aims radiation at the cancer. The allowed schedules for external beams radiotherapy are:~* 40 Gy in 15 fractions;~* 30 Gy in 5 fractions;~* 40 Gy or 38.5 in 10 twice-daily fractions (each daily dose must be separated by at least 6 hours)."

"Brachytherapy is a form of radiation therapy where a sealed radiation source is placed inside or next to the area requiring treatment.~The schedule for brachytherapy are:~* 32 Gy in 8 twice-daily fractions for HDR;~* 30.3 Gy in 7 twice-daily fractions for HDR;~* 50Gy 0.60-0.80 Gy/hour (1 pulse/hour, 24 hours/day) for PDR."