Breast conserving surgery for multifocal breast cancer.

Objective: The purpose of this study is to examine the oncological safety of breast conserving surgery (BCS) for patients with multifocal breast cancer.

Summary Background Data: Few studies have reported about BCS for multifocal breast cancer. BCS for multifocal cancer has a risk of local failure in previous reports, whereas recent studies reported the feasibility of BCS.

Sentinel node biopsy in patients with multiple breast cancer.

Background: Multicentric or multifocal breast cancer is considered a limitation for sentinel lymph node biopsy (SLNB). Studies showing that all quadrants of the breast drain via common afferent lymphatic channels indicate that multiple tumors do not affect lymphatic drainage. We therefore assessed the accuracy of SLNB in patients with multiple breast tumors.