Selective loss of small myelinated fibers in the lateral corticospinal tract due to midbrain infarction.
case_report · Level V
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Abstract
Small myelinated fibers in the lateral corticospinal tract (LCST) were selectively diminished as compared with large myelinated fibers in a patient with an old paramedian midbrain infarct involving the red nuclei, oculomotor nuclei, and inferior olivary pseudohypertrophy. Although the physiologic function of small myelinated fibers in the LCST is unknown in humans, we hypothesize that some of these fibers may include the rubrospinal tract.
Medical subject headings
- Cerebral Infarction
- Nerve Fibers, Myelinated
- Pyramidal Tracts