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Contrast-enhanced CT. Eighteen months following excision of the 3 metastases and WBRT, no tumor is present. (Contributed by Russell Andrews.)
May. 16, 2020
Parkinsonism is a common side effect of all the atypicals except quetiapine and clozapine, certain calcium channel blockers, tetrabenazine, and its derivative vesicular monoamine transporter type 2 (VMAT2) blockers. It may also be seen with valproic acid and lithium. Although most drugs causing parkinsonism do so in a dose-related manner, there is an enormous variation in individual susceptibility.
Aug. 16, 2020
Amyotrophic lateral sclerosis-parkinsonism-dementia complex (ALS-PDC), also known as lytico-bodig, is an endemic neurodegenerative disorder of the Western Pacific islands. It is a slowly progressive degenerative disease with a spectrum of clinical presentation that can include features of amyotrophic lateral sclerosis, parkinsonism, and dementia. The cycad-derived toxin cycasin as well as the neurotoxic nonprotein amino acid beta-methyl-amino-L-alanine have been postulated as potential etiologies.
Aug. 25, 2020
Mar. 29, 2020
Oct. 17, 2020
Pituitary adenomas represent 9% of intracranial neoplasms. Typical presenting manifestations include amenorrhea, infertility, visual field abnormalities, and headache. Diagnosis is often made with brain MRI, visual field testing, and serum hormone assay.
Jan. 28, 2021
Porencephaly, an encephaloclastic brain lesion, is one of the most frequent causes of infantile cerebral palsy. This lesion results mainly from ischemic
Aug. 03, 2021
Paroxysmal dyskinesias are a relatively rare subset of hyperkinetic movement disorders that are defined by their episodic nature. They may be categorized into paroxysmal kinesigenic dyskinesia, paroxysmal nonkinesigenic dyskinesia, and paroxysmal exertion-induced dyskinesia. Paroxysmal dyskinesias may be sporadic, genetic, or caused by metabolic or structural etiologies. Another common cause of paroxysmal dyskinesias is psychogenic movement disorders.
Feb. 15, 2021