Benign breast tumors are very common, occurring at all ages. They are dominated by fibroadenomas. Other, rarer tumors may pose a diagnostic problem. Benign tumors are often discovered during breast cancer screening. It can be the source of a more or less rich symptomatology, sometimes misleadingly pseudo-malignant. Optimal use of imaging modalities should help reassure patients, avoid unnecessary investigations and surveillance, and avoid surgical biopsies for diagnostic purposes. In the majority of cases, mammography-ultrasound can be used to diagnose these tumors. In some cases, MRI may be a useful adjunct.This book is designed primarily for radiologists involved in breast imaging.