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Efferent and afferent evoked potentials in patients with adrenomyeloneuropathy.

[adrenomyeloneuropathy]

This paper investigates efferent and afferent conductions of the central nervous system by various evoked potentials in patients with adrenomyeloneuropathy (AMN).Ten pure AMN patients without cerebral involvement were studied. Motor evoked potentials (MEPs), somatosensory evoked potentials (SEPs), auditory brainstem response (ABR), and pattern reversal full-field visual evoked potentials (VEPs) were recorded. For MEP recording, single-pulse or double-pulse magnetic brainstem stimulation (BST) was also performed.Abnormal MEP was observed in all ten patients, abnormal SEP in all ten, abnormal ABR in nine, and abnormal VEP in only one. Brainstem latency was measured in three of the seven patients with central motor conduction time (CMCT) prolongation. The cortical-brainstem conduction time was severely prolonged along the normal or mildly delayed brainstem-cervical conduction time in those three patients.The pattern of normal VEP and abnormal MEP, SEP, ABR is a clinically useful electrophysiological feature for the diagnosis. BST techniques are helpful to detect, functionally, intracranial corticospinal tract involvement, probably demyelination, in pure AMN patients.

Diseases presenting "central nervous system" symptom

  • 22q11.2 deletion syndrome
  • adrenomyeloneuropathy
  • alexander disease
  • aniridia
  • aromatase deficiency
  • canavan disease
  • child syndrome
  • classical phenylketonuria
  • congenital toxoplasmosis
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  • fabry disease
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  • hirschsprung disease
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  • kabuki syndrome
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  • krabbe disease
  • lamellar ichthyosis
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  • malignant atrophic papulosis
  • monosomy 21
  • neonatal adrenoleukodystrophy
  • phenylketonuria
  • proteus syndrome
  • scrub typhus
  • severe combined immunodeficiency
  • sneddon syndrome
  • triple a syndrome
  • von hippel-lindau disease
  • waldenström macroglobulinemia
  • well-differentiated liposarcoma
  • wiskott-aldrich syndrome
  • wolf-hirschhorn syndrome
  • x-linked adrenoleukodystrophy
  • zellweger syndrome

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