Book excerpt: This expert volume in the Diagnostic Pathology series is an excellent point-of-care resource for practitioners at all levels of experience and training. Covering the full range of common and rare nonneoplastic renal diseases, it incorporates the most recent scientific and technical knowledge in the field to provide a comprehensive overview of all key issues relevant to today's practice. Richly illustrated and easy to use, Diagnostic Pathology: Kidney Diseases, fourth edition, is a visually stunning, one-stop resource for every practicing pathologist, nephrologist, resident, student, or fellow as an ideal day-to-day reference or as a reliable training resource. - Provides a comprehensive source for key pathologies and clinical features of more than 265 kidney diseases - Features two dozen new chapters on a variety of timely topics, including COVID-19 nephropathies, xenografts, artificial intelligence (AI), digital pathology analysis, harmonized nephropathology terminology, newly identified types of amyloidosis, common artifacts and pitfalls on kidney biopsy, vaccination-associated renal disease, crystal nephropathies, and much more - Includes updates from the International Kidney and Monoclonal Gammopathy (IKMG) research group, the American College of Rheumatology/European League Against Rheumatism (ACR/EULAR) classification criteria for IgG4-related disease, Banff Foundation for Allograft Pathology, and others - Details updated genetic causes of nephrotic syndromes and antinephrin antibodies in podocytopathies—by the investigator who discovered it - Discusses the newly identified variant IgG nephropathy and novel membranous autoantigens - Contains chapters on techniques, including immunofluorescence on paraffin sections, C4d staining, and polyomavirus detection in tissue - Contains more than 4,300 print and online images, including high-resolution photographs and histologic images, full-color medical illustrations, radiologic images, and more - Employs consistently templated chapters, bulleted content, key facts, a variety of tables, annotated images, pertinent references, and an extensive index for quick, expert reference at the point of care - Shares the expertise of internationally recognized authors who provide fresh perspectives on multiple topics, with a particular emphasis on practical information that directly assists in making and supporting a diagnosis - 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