Underwood’s Pathology (formerly General and Systematic Pathology) is an internationally popular and highly acclaimed textbook, written and designed principally for students of medicine and the related health sciences. Pathology is presented in the context of modern cellular and molecular biology and contemporary clinical practice. After a clear introduction to basic principles, it provides comprehensive coverage of disease mechanisms and the pathology of specific disorders ordered by body system. An unrivalled collection of clinical photographs, histopathology images and graphics complement the clear, concise text. For this sixth edition, the entire book has been revised and updated. Well-liked features to assist problem-based learning – including body diagrams annotated with signs, symptoms and diseases and a separate index of common clinical problems – have been retained and refreshed.