Delaying post-operative radiotherapy may increase risk of local recurrence in people with breast cancer

References 

1. Overgaard et al. Postoperative radiotherapy in high-risk premenopausal women with breast cancer who receive adjuvant chemotherapy. N Engl J Med 1997; 337: 949–955
2. Fortin A, Larochelle M, et al. Effects of delaying radiotherapy after breast conservative surgery. Presented at the Canadian Association of Radiation Oncologists, September 2001, Quebec City, Canada
3. The sequencing of chemotherapy and radiation therapy after conservative surgery for early-stage breast cancer. N Engl J Med 1996; 324: 1356–1361