Large Segmentation Radiotherapy ± Deep Inspiration Breath Hold(DIBH) for Left Breast Cancer

Exclusion Criteria

• •1. Lesions were observed on both sides of the breast.
• •2. Diagnosis could not be confirmed by pathology.
• •3. Distant metastasis was identified.
• •4. The patient had undergone neoadjuvant chemotherapy or breast reconstruction surgery.
• •5. Severe cardiac insufficiency; myocardial infarction or uncorrected unstable cardiac arrhythmia or uncorrected unstable angina within the last 3 months; or pericardial disorders
• •6. The patient's New York Heart Association (NYHA) cardiac classification is within categories 2-4.
• •7. A history of chronic lung disease, including conditions that may contribute to ductal dilatation, such as chronic obstructive pulmonary disease (COPD) and interstitial pneumonia.
• •8. Previous mediastinal radiotherapy.
• •9. Previous or concurrent second primary malignant tumor (except skin cancer that is not a malignant black pigmented tumor, papillary/follicular carcinoma of the thyroid, carcinoma in situ of the cervix, and contralateral non-invasive breast cancer).
• •10. Irradiation of the lymphatic drainage area of the internal breast is required.