In the early days, the application of radiotherapy in breast cancer treatment was mainly for the recurrent disease after mastectomy or for inoperable disease.

• 早年，放射治疗在乳癌治疗的主要应用是使用于乳癌的晚期治疗，例如乳房切除手术后复发或是无法以手术切除的乳癌。