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Kernohan's notch in chronic subdural hematoma: findings on magnetic resonance imaging.

Authors
  • Itoyama, Y
  • Fujioka, S
  • Ushio, Y
Type
Published Article
Journal
Journal of neurosurgery
Publication Date
Apr 01, 1995
Volume
82
Issue
4
Pages
645–646
Identifiers
PMID: 7897529
Source
Medline
License
Unknown

Abstract

A 69-year-old man presented with mild left-sided hemiparesis of 2 years' duration. A computerized tomography scan revealed a left-sided chronic subdural hematoma and a midline shift to the right. Magnetic resonance (MR) imaging obtained on admission to the hospital also disclosed a deformity of the right crus cerebri. After drainage and irrigation of the hematoma through a single burr hole, the left hemiparesis improved significantly. Magnetic resonance imaging performed 9 days after the operation revealed that the size of the subdural hematoma had diminished and the deformity of the crus cerebri had improved markedly. Kernohan's notch, caused by a supratentorial mass and producing ipsilateral hemiparesis or hemiplegia, is rarely demonstrated radiographically. This may be the first reported case in which Kernohan's notch in chronic subdural hematoma has been demonstrated on MR imaging.

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