Book excerpt: This sixth edition provides an overview of fetal and neonatal pathology through a system-based approach. This book contains new chapters on immunology, with a continued focus on molecular aspects of pathology in the perinatal setting. The general principles of perinatal pathology and their clinical situations are also discussed, along with specific pathological entities and their organ systems. Keeling’s Fetal and Neonatal Pathology, sixth edition aims to help the reader treat common problems through anatomical pathology findings and is relevant to practicing and trainee pathologists, obstetricians, maternal and fetal medicine specialists, neonatologists, and pediatricians.