Objective: Radial scar (RS) is a sclerosing lesion of the breast which may be associated with a spectrum of epithelial proliferative lesions and carcinoma. It is frequently subject to biopsy when presenting as a mammographic abnormality. The need to excise RS diagnosed on core biopsy (CB) remains controversial. The aim of our study is to determine the frequency of upgrade in diagnosis after excision of RS. Method: A retrospective study of RS diagnosed on CB in our department between 01/01/2000 and 31/12/2011 was performed.