Radiation therapy uses high-energy x-rays to damage tumor cells. Giving radiation during surgery followed by external-beam radiation to the entire breast may kill more tumor cells.The clinical trial is conducting to compare the effectiveness of radiation therapy during surgery and whole-breast radiation therapy in treating women who have undergone breast-conversing surgery for Intermediate or high grade ductal carcinoma in situ breast cancer.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Enrollment
74
Boost with 20 Gy during BCS, EBRT with 46-50 Gy
whole breast radiation after BCS with 46-50 Gy
Guangdong Academy of Medical Sciences
Guangzhou, Guangdong, China
ipsilateral breast tumor recurrence rate after surgery within five years
Within 5 years after surgery,we should evaluate ipsilateral breast tumor recurrence and Disease free survival as the most important outcome measure
Time frame: Within 5 years after surgery
Disease free survival after surgery within five years
Within 5 years after adjuvant chemotherapy,we should evaluateDisease free survival(DFS) rates as thet important outcome measure.
Time frame: Within 5 years after surgery
Overall survival after surgery within ten years
After surgery,we should evaluate overall survival (OR)rates as the secondary important outcome measure.
Time frame: Within ten years after surgery
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