A guide to a technology that is growing to parallel and complement radiology for evaluating breast masses. Particularly emphasizes differentiating between benign and malignant lesions to identify women in which the likelihood of malignancy is low enough that biopsy can be avoided. Explains the basic principles and techniques and normal breast anatomy at various ages, then focuses on investigating a variety of conditions. Also considers sonography of implants, and documentation. Annotation c. by Book News, Inc., Portland, Or.