Pathology Red Flags and Decision-Making: Clinical, Ethical, and Legal Dimensions was written for the modern reality in which every pathology report functions not only as a clinical conclusion but as a permanent legal document subject to retrospective scrutiny. Most failures in pathology do not begin as obvious mistakes; they begin as uncertain judgments finalized too early, reports that appear complete but lack defensible reasoning, documentation that satisfies workflow yet collapses under inquiry, and quiet decisions later examined in courtrooms and regulatory reviews. In today’s digitally traceable laboratory environment, slides, images, metadata, and audit trails are permanently preserved, and regulators and courts evaluate not intent but clarity of process, traceability, and proof. Clinical accuracy alone no longer protects the pathologist. This book directly confronts where diagnostic reasoning fails under investigation, how routine laboratory practices become legal vulnerabilities, how cognitive bias and system pressure distort judgment, and why documentation that seems adequate fails evidentiary standards. Structured across 40 chapters using a repeatable framework that integrates clinical scope, explicit red flags, procedural steps, legal perspective, and real-case learning, it converts guidelines into defensible action. Readers learn to recognize danger early, document reasoning rather than conclusions, protect chain-of-custody and electronic record integrity, meet ISO 15189 and CAP scrutiny, and communicate findings that withstand cross-examination. Written for pathologists, laboratory directors, quality managers, forensic specialists, medico-legal consultants, auditors, and postgraduate trainees, this book is not a technical atlas or abstract ethics text but a medico-legal survival manual for diagnostic medicine, reinforcing that in pathology every slide, phrase, and signature becomes part of a patient’s enduring legal narrative and that early recognition of red flags transforms uncertainty from risk into professional foresight.