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(A) Retinal OCT centered on the fovea shows the foveal depression and multiple retinal layers seen. (B) Optic nerve OCT shows a cross-section. (Contributed by Dr. Rosa Ana Tang.)
Jun. 17, 2021
Behavioral & Cognitive Disorders
Fragile X syndrome is the most common inherited cause of cognitive impairment in males. The most common problems are cognitive impairment and behavioral disturbances, with 4% to 8% of cognitive impairment or developmental delay caused by fragile X mutation. The clinical severity is directly related to the number of repeats in the FMR1 gene.
Jan. 06, 2021
Childhood Degenerative & Metabolic Disorders
Jan. 05, 2021
Neurovascular injury is a broad topic that includes injury to different neuroanatomical sites. They can occur either extracranially or intracranially and can manifest as an arterial dissection, pseudoaneurysm, fistula formation, and thrombosis or occlusion of the involved vessel. A high index of suspicion is needed to diagnose vascular injuries in an accurate and timely manner because most patients have no focal neurologic deficit on presentation.
Nov. 07, 2020
Epilepsy & Seizures
Aug. 12, 2021
Jun. 01, 2020
Acute motor axonal neuropathy (AMAN) is a variant of Guillain-Barré syndrome with predominant motor axon dysfunction or injury, and it is strongly associated with antecedent Campylobacter jejuni infection and the presence of anti-ganglioside antibodies. AMAN presents as an acute, flaccid, symmetrical ascending paralysis with increased cerebral spinal fluid protein, suggesting Guillain-Barré syndrome. Sensory impairment is minimal, and autonomic involvement less common.
Mar. 15, 2021
Thoracic intervertebral disc disease is a rare source of pain and neurologic dysfunction. It has been described as causing many different symptoms without a discrete clinical syndrome. Although back pain is usually the most common presenting symptom, many other presentations have been described that are often misleading. MRI is the key imaging modality for diagnosis of disc prolapse and cord compression.
Jan. 12, 2021