Spontaneous Parenchymal Hemorrhage
Spontaneous Parenchymal Hemorrhage Main Text Preamble Intracranial hemorrhage is not a single entity but results from a range of vascular pathologies that differ in implications for prognosis and treatment. In…
Pineal and Germ Cell Tumors
Pineal and Germ Cell Tumors Main Text Preamble The region in and around the pineal gland is one of the most anatomically complex intracranial sites. There are many critical structures…
Cranial Nerve Tumors
Cranial Nerve Tumors Main Text Preamble Nerve sheath tumors occur throughout the CNS either sporadically (discussed here) or as part of tumor predisposition syndromes, such as neurofibromatosis types 1 and…
Circumscribed Astrocytic Gliomas
Circumscribed Astrocytic Gliomas Main Text Preamble In the 2021 5th edition WHO, circumscribed astrocytic gliomas are a separate group within gliomas, glioneuronal and neuronal tumors. Circumscribed Astrocytomas Preamble Six neoplasms…
Posterior Fossa Malformations
Posterior Fossa Malformations Main Text Preamble Neural structures in the midbrain and posterior fossa are derived from three sources: (1) The embryonic mesencephalon gives rise to midbrain structures. (2) The…
Approach to Toxic, Metabolic, Degenerative, and CSF Disorders
Approach to Toxic, Metabolic, Degenerative, and CSF Disorders Main Text Preamble Metabolic disorders are relatively uncommon but important diseases in which imaging can play a key role in early diagnosis…
Miscellaneous Tumors and Tumor-Like Conditions
Miscellaneous Tumors and Tumor-Like Conditions Main Text Preamble Some important neoplasms that affect the calvaria, skull base, and cranial meninges are not included in the 2021 5th edition WHO classification…
Adult-Type Diffuse Gliomas
Adult-Type Diffuse Gliomas Main Text Preamble Gliomas, glioneuronal tumors, and neuronal tumors are the most common and most varied neoplasms that affect the brain parenchyma. Of the six different groups…
Anomalies of the Skull and Meninges
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…
