A radial scar is a benign lesion: characterised by spiculated masses or areas of distortion, often with multiple long spicules and central areas of sclerosis. It often occurs in the background of benign ductal hyperplasia, intraductal papilloma and/or sclerosing adenosis, in which fibrous stromal undergoes fibrosis and elastosis.
It can often mimic carcinoma, so although it is a completely benign lesion, it is often excised to exclude malignancy.
Notes on Medicine/Surgery 