This expert volume in the Diagnostic Pathology series is not only an up-to-date, comprehensive diagnostic support tool for surgical pathologists, but also a valuable resource for all health care workers who provide care to patients with breast disease, including radiologists as well as surgical, medical, and radiation oncologists. An excellent point-of-care reference for practitioners at all levels of experience and training, the fourth edition of Diagnostic Pathology: Breast, Fourth Edition provides details on normal breast histology, information to assist in processing breast specimens, and multichapter sections on diagnostic patterns, benign lesions, carcinomas, predictive and prognostic factors, stromal lesions, inflammatory lesions, lymphomas, and hereditary breast disease. Richly illustrated and easy to use, this volume is ideal as a one-stop resource for day-to-day reference or as a reliable training resource. Incorporates the most up-to-date scientific and technical knowledge, providing a comprehensive overview of all key issues relevant to today’s practice Emphasizes the correlation of pathologic lesions with findings on breast imaging and provides guidance on the interpretation of core needle biopsies Contains new overview chapters that lay the groundwork for initial evaluation and assistance with differential diagnosis, as well as new chapters on HER2-low breast carcinoma, immunohistochemical studies for diagnosis, proliferation, and more Provides important updates throughout, covering the evaluation of ESR1, PIK3CA, AKT, and BRCA1 mutations to guide therapy; tumor-infiltrating lymphocytes and PD-L1 for treatment planning; HER2-low assessment to determine eligibility for antibody-drug conjugates; and much more Features new animations and new videos to assist in understanding three-dimensional anatomy, radiologic-pathologic correlation, the processing of breast specimens, and the gross identification of breast lesions Contains more than 3,700 extensively annotated images, including gross pathology photographs, histopathology photomicrographs, a wide range of immunohistochemical stains, fluorescent in situ hybridization, breast-imaging studies, and full-color illustrations Employs consistently templated chapters, bulleted content, key facts, annotated images, and an extensive index for quick, expert reference at the point of care Includes an eBook version that enables you to access all text, figures, and references, with the ability to search, customize your content, make notes and highlights, and have content read aloud