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Cerebral Degeneration With Hypertrophy of the Contralateral Pyramid
David A. Scales, MD;
George H. Collins, MD
Arch Neurol. 1972;26(2):186-190.
Abstract
Unilateral hypertrophy of the medullary pyramid apparently developed subsequent to the occurrence of contralateral cerebral damage in the antenatal or perinatal period. Quantitative analysis of this material demonstrates a pyramidal size which is greater than those of reported cases and also a marked increase in the number of both large and small axons, which is at variance with earlier reports in which only an increase in larger fibers was found. The early age of onset may be responsible for this difference in fiber distribution. It is suggested that failure of the damaged pyramid to develop causes a hypertrophic response to occur in the contralateral uncrossed pyramidal tract.
Author Affiliations
Gainesville, Fla
From the departments of medicine (neurology) (Dr. Scales) and pathology (neuropathology) (Dr. Collins), University of Florida College of Medicine, Gainesville, Fla.
Footnotes
Accepted for publication Sept 14, 1971.
Reprint requests to University of Florida College of Medicine, Gainesville, Fla 32601 (Dr. Collins).
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