This book provides a quick, pattern-based reference for interpreting histologic changes in non-neoplastic liver. It is designed to guide the reader based on morphologic pattern and basic clinical information. Each chapter covers a broad but identifiable pat tern of pathologic liver findings (e.g., portal inflammation or steatosis ) and discusses the major disease entities that manifest as such a pattern. As liver biopsies can be complex and daunting, such an approach should improve the reader s ability to identi fy a likely diagnosis or differential and to distinguish among the possible disease enti ties. Sample reports at the end of each chap ter offer guidance on how to sign out cases.