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An isodense, lobulated tumor is seen within the right atrium. The necrotic center of the tumor is hypodense. There is hydrocephalus. (Contributed by Dr. Sherman Stein.)
Apr. 03, 2021
Oct. 21, 2020
Neuro-Ophthalmology & Neuro-Otology
Drop attacks are sudden falls without loss of consciousness that are not precipitated by a specific stimulus, occur with abrupt onset and without warning, and are followed by a rapid return to baseline. A range of localizations for drop attacks is possible, but most commonly lower brainstem or spinal cord structures are implicated. Drop attacks generally indicate transient impairment of bilateral CNS structures involved in maintenance of postural muscle tone and balance.
Neurologic signs of lumbosacral plexus injuries consist of motor deficit with flaccid paralysis associated with sensory deficits to all types of stimulation
Sep. 02, 2020
Transverse myelitis is part of a spectrum of demyelinating disease but has unique features that differentiate it from multiple sclerosis. The spinal cord damage in acute complete transverse myelitis generally affects all cord functions, and the symptoms are typically more severe than in typical cord lesions of multiple sclerosis. The first symptoms in transverse myelitis are ascending paresthesias or back pain at the level of the myelitis, plus leg weakness and sphincter dysfunction. Tingling or paresthesias in the feet soon progress to loss of pain, temperature, and vibration sensation, and then halt at a sensory level, usually thoracic (approximately 80%).
Aug. 05, 2016
"Brain death" is the common term for the determination of human death by showing the irreversible cessation of all clinical brain functions.
May. 05, 2019
Feb. 13, 2020
Colloid cysts are benign intraventricular lesions that may present with a variety of neurologic symptoms, most commonly headache from obstructive hydrocephalus.
Jul. 11, 2019