Radiotherapy in breast cancer

Area of Science:

• Oncology
• Radiation Oncology
• Breast Cancer Research

Background:

• Radiotherapy is a cornerstone in breast cancer management, with ongoing research refining its application.
• Controversies exist regarding the optimal use of radiation in ductal carcinoma in situ (DCIS).
• The role of radiotherapy in invasive breast cancer and specific patient populations requires continuous evaluation.

Purpose of the Study:

• To review current evidence on radiotherapy in breast cancer treatment, focusing on controversial areas and established roles.
• To examine the efficacy of radiotherapy in ductal carcinoma in situ and invasive breast cancer.
• To discuss the impact of radiotherapy on locoregional recurrence and survival, particularly in high-risk patients.

Main Methods:

• Comprehensive literature review of recent studies on breast cancer radiotherapy.
• Analysis of data concerning ductal carcinoma in situ management with breast-conserving surgery and radiation.
• Evaluation of radiotherapy outcomes in invasive breast cancer, including recurrence predictors and management in unusual situations.

Main Results:

• No consensus on radiotherapy for ductal carcinoma in situ, but its distinct subtypes and clinical presentations are recognized.
• Radiotherapy continues to demonstrate success in invasive breast cancer, improving local control and disease-free survival when combined with systemic therapy.
• Evidence supports post-mastectomy radiotherapy for high-risk patients, as adjuvant chemotherapy alone is insufficient for preventing recurrence.

Conclusions:

• Radiotherapy remains vital for invasive breast cancer and selected post-mastectomy patients, enhancing local control and survival.
• Further research is needed to clarify the role of radiotherapy in ductal carcinoma in situ management.
• Combined modality treatment, including radiotherapy and systemic therapy, offers improved outcomes for high-risk breast cancer patients.