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A parasellar epidermoid cyst with distortion of surrounding structures. (Contributed by Dr. Robert Grant.)
May. 24, 2021
Jul. 31, 2021
Epilepsy & Seizures
Generalized tonic-clonic seizures initially occur with tonic and/or clonic motor activity, beginning as partial seizures (simple or complex) that secondarily generalize. Impaired consciousness is always present from the time the seizure generalizes. It is the most severe and life-threatening form of status epilepticus.
Nov. 26, 2018
Anterior pituitary aplasia or dysplasia is associated with endocrinopathies and often with malformations of the eyes, brain, or somatic anomalies; multiple genes are implicated, particularly LHX4, OTX2, and HESX1. Ectopic neurohypophysis and posterior pituitary dysplasia is mainly associated with anterior pituitary endocrine defects because of early neural induction of the Rathke pouch; the HESX1 gene is mostly implicated.
Apr. 30, 2021
Clinically isolated syndrome is a first symptomatic episode of central nervous system dysfunction due to inflammatory demyelination, which may indicate the onset of multiple sclerosis, or may be an isolated incident. Patients may show accelerated brain atrophy and mild cognitive impairments.
Sep. 30, 2020
General Child Neurology
Nov. 01, 2020
Fatal familial insomnia is a prion disease characterized by loss of sleep, oneiric stupors with dream enactment, autonomic activation, and somatomotor
Jan. 18, 2021
Stroke & Vascular Disorders
Fibromuscular dysplasia is a relatively uncommon multifocal arterial disease of unknown cause, characterized by nonatherosclerotic abnormalities involving the smooth muscle, fibrous and elastic tissue, of small- to medium-sized arterial walls. Cerebrovascular lesions may include arterial dissection and aneurysms. The most common neurologic symptoms are nonspecific, including headaches, vertigo, pulsatile tinnitus, sudden hearing loss, altered mentation, neck pain, and syncope.
Dec. 02, 2020