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Noncontrast enhanced CT scan demonstrating low-density area in the posterior corpus callosum, suggestive of a lipoma. (Contributed by Dr. Robert Grant.)
May. 21, 2021
Colpocephaly refers to the selective dilatation of the occipital horns with normal or small frontal horns and 3rd ventricle. It is often confused with
Jul. 13, 2019
Behavioral & Cognitive Disorders
Dementia with Lewy bodies (DLB) is an age-associated neurodegenerative dementia characterized by the postmortem findings of pathologically misfolded alpha-synuclein protein aggregations in the form of Lewy bodies and Lewy neurites in the CNS. The majority of patients with DLB also have a moderate to severe level of Alzheimer disease plaque and tangle pathology sufficient for a secondary neuropathological diagnosis of Alzheimer disease. Clinically, this syndrome is associated with a prominent dementia with simultaneous, or later developing, extrapyramidal symptoms (ie, parkinsonism); however, not all patients with DLB develop clinical parkinsonism.
Nov. 20, 2017
Headache & Pain
Nov. 16, 2020
Patients with polymyositis commonly present with a myopathy characterized by proximal and often symmetric muscle weakness manifested as difficulty performing tasks requiring the use of proximal muscles. Polymyositis has no unique clinical features, and its diagnosis is one of exclusion. Most patients described as having polymyositis actually have another disease—either inclusion body myositis, necrotizing autoimmune myositis, or antisynthetase syndrome.
May. 03, 2021
Nov. 07, 2020
This article updates the results from the 7 evidence-based reviews on the management of patients with migraine and cluster headache: specifically, acute,
Apr. 06, 2021
Bell palsy is an acute, usually unilateral mononeuropathy of the seventh cranial nerve. The disorder is presumed to be inflammatory and associated with one of several different viral etiologies, usually herpes simplex virus-1. Features of Bell palsy include impairment of voluntary movement of facial and platysmal muscles, facial muscles pulled to the opposite side on smiling, saliva and food collected on the paralyzed side, and on attempting to close the eye, the eyeball is diverted upward and slightly outwards to avoid corneal exposure (Bell phenomenon).
Sep. 09, 2020