1. Introduction to Sudden Infant and Perinatal Unexplained Death -- 1.1 Sudden Infant Death Syndrome (SIDS) -- 1.2 Sudden Intrauterine Unexplained Death (SIUD) -- 1.3 Cardiac Conduction System (CCS) -- 1.4 Central, Peripheral and Autonomic Nervous Systems -- 2. Techniques and Criteria in Anatomic and Forensic Pathology of Sudden Infant and Perinatal Unexplained Death -- 2.1 Clinical and Pathological Information 2.2 Post Mortem Regulation on SIDS and Sudden Perinatal Unexplained Death -- 2.3 Necropsy Procedure -- 2.4 Cardiac Sampling and Study of the Conduction System -- 2.5 Brainstem Sampling -- 2.6 Cerebellum Sampling 2.7 Study of the Carotid Bifurcation, Ganglia and Paraganglia -- 2.8 Lung Evaluation of the Stage of Development -- 2.9 Immunohistochemistry and Other Techniques -- 2.10 Cases Analyzed -- 2.11 Statistical Analysis – 3. Pathological and Related Epidemiological Findings in Sudden Infant and Perinatal Unexplained Death -- 3.1 Epidemiological Results -- 3.2 Cardiac Conduction Findings -- 3.3 Central and Autonomic Nervous System Findings -- 3.4 Peripheral Autonomic Nervous System Findings -- 3.5 Cerebellar Findings – 4. Moving Forward the Discussion on Sudden Infant and Perinatal Unexplained Death -- 4.1 Advances in Cardiac Conduction Pathology -- 4.2 Advances in Neuropathology -- 4.3 “Grey Zone”/ Borderline SIDS and SPUD -- 4.4 Genetics of SIDS and SPUD – 5. Concluding Remarks on Sudden Infant and Perinatal Unexplained Death -- Acronyms and Abbreviations – Index.