Holoprosencephalies, Related Disorders, and Mimics Main Text Preamble Holoprosencephalies and variants, such as syntelencephaly, are classified as anomalies of ventral prosencephalon development. Other anomalies of the ventral prosencephalon include septo-optic…
Pediatric-Type Diffuse High-Grade Gliomas Main Text Preamble In recent years, with the advent of molecular diagnosis, our classification of pediatric high-grade gliomas has moved from a histology-based (e.g., “glioblastoma”) and…
Pediatric-Type Diffuse Low-Grade Gliomas Main Text Preamble The 5th edition WHO classification of CNS tumors groups many neoplasms into tumor “families.” By far, the largest, most varied tumor family is…
Approach to Nontraumatic Hemorrhage and Vascular Lesions Main Text Preamble This part devoted to “spontaneous” (i.e., nontraumatic) hemorrhage and vascular lesions begins with a general discussion of brain bleeds. Subsequent…
Trauma Overview Main Text Preamble Trauma is one of the most frequent indications for emergent neuroimaging. Because imaging plays such a key role in patient triage and management, we begin…
Approach to Congenital Malformations Main Text Preamble A basic knowledge of normal brain development and maturation provides the essential foundation for understanding congenital malformations, the subject of the final part…
Introduction to CNS Neoplasms and Nonneoplastic Cysts Main Text Preamble CNS neoplasms are both (1) classified and (2) graded. The universally accepted classification of these tumors is sponsored by the…
Approach to Infection, Inflammation, and Demyelination Main Text Preamble Although any part of the human body can become inflamed or infected, the brain has long been considered an “immunologically protected”…
7 Skull Base Approaches for Aneurysm Rokuya Tanikawa and Kosumo Noda Summary Skull base approaches can be used to augment all standard cranial approaches to aneurysms. Anterior petrosectomy and posterior…
20 Venous Considerations in Skull Base Surgery Chandranath Sen and Carolina Benjamin Summary Given the varied configurations of the venous system in both the normal and pathologic states, it is…
