The second edition of this book has been extensively revised and updated.  There have been numerous scientific advances in the radiology, pathology and risk assessment of benign breast lesions since the publication of the first edition.  The first edition concentrated on screen-detected lesions, which has since been rectified; new symptomatic and screen-detected lesions are discussed in the second edition and include: mastitis and breast abscesses, idiopathic granulomatous mastitis, diabetic mastopathy, phyllodes tumours, gynaecomastia and pseudoangiomatous stromal hyperplasia.  The chapters on columnar cell lesions and mucocele-like lesions have been extensively updated.  Where applicable, genetic analysis of the benign lesions, which is becoming part of personalised medicine in the field of breast cancer, has been included.  The book also presents detailed analyses of the main models, such as the Gail Model, used to assess the subsequent risk of breast cancer in individuals. The current trend in the management of all cancers is preventative.  Screening mammography detects early curable cancers as well as indeterminate lesions, the latter of which are invariably pathologically benign.  The author has collated important benign lesions and, based on peer-reviewed publications, has documented the relative risk of subsequent cancer to allow the patient and the clinician to implement preventative measures where possible.  This book will therefore serve as an essential component of multidisciplinary management of patients with symptomatic and screen-detected benign breast lesions.