Overview: current status of breast conserving therapy in Japan.

摘要: Breast conserving operations have become the standard operation for early breast cancer. They were performed in about 40% of all cancer patients Japan 2000, and percentage is still increasing. Ductal carcinoma situ (DCIS) accounts 7% cancers DCIS been followed by a low in-breast recurrence rate, leading to wider indications as screening mammography has come be used Japan. In-breast correlated surgical margin status. It important evaluate volume cell nests well positivity. Neoadjuvant chemotherapy popular an vivo sensitivity test means down-staging increase possibility performing operation. There are two patterns shrinkage when neoadjuvant effective: cocentric honeycomb, pattern residual must determined before surgery. MRI effective method evaluating nests. The rate after perform reported higher than among candidates at start. Sentinel node biopsy techniques endoscopic now being assessed conjunction with operations. current status reviewed comparison their Western countries.