Anomalies of the Skull and Meninges Main Text Preamble Anomalies of the skull and meninges represent maldevelopment of the embryonic mesenchyme. These include cephaloceles, congenital calvarial defects, and other meningeal…
Hematolymphoid and Hematopoietic Tumors Main Text Preamble This chapter focuses on hematopoietic tumors and tumor-like conditions. We begin with an increasingly common group of neoplasms, lymphomas and related disorders, then…
Choroid Plexus Tumors Main Text Preamble The 5th edition WHO separates choroid plexus tumors from gliomas, glioneuronal tumors, and neuronal tumors. Choroid plexus neoplasms are now considered as their own…
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…
