Whole Breast RT on Prone Position in Korean Women

Feasibility of Prone Position in Postoperative Whole Breast Radiation Therapy in Korean Breast Cancer Patient

It is well known fact that postoperative whole breast radiation therapy (RT) in left breast cancer patient can cause cardiac problem according to the exposed dose. In the several studies in other countries, it was repeatedly showed that RT on prone position can reduce cardiac exposed RT dose in left breast cancer. However, the effectiveness of prone position in RT is not studied in the Korean women have relatively small breast. The investigators planned this study to evaluate the real efficacy of prone position in Korean breast cancer treated with RT.

Inclusion Criteria:

• Pathologically confirmed left breast cancer
• 20 or older age
• less than 70 years old
• after curative resection
• Eastern Cooperative Oncology Group performance status 0 to 1
• Informed consent to this study
• Consent to contraception for 6 months after RT completion

Exclusion Criteria:

• Male breast cancer
• Combined distant metastasis
• Status of pregnant or brest feeding
• Previous RT history of chest or neck area
• Indication of supraclavicular RT
• Not indicated postoperative whole breast RT