microgyria /mi·cro·gyr·ia/ (-ji´re-ah) polymicrogyria.
microgyria
mi·cro·gy·ri·a (m  kr -j r - )n. Abnormal smallness of the convolutions of the brain. |
microgyria
[mī′krōjī′rē·ə]
Etymology: Gk, mikros + gyros, turn
a developmental defect of the brain in which the convolutions are abnormally small, resulting in structural malformation of the cortex. The condition is usually associated with mental retardation and physical defects. Also called polymicrogyria.
microgyria
the convolutions in the cerebral cortex are smaller and more numerous than usual and the normal gyral pattern may be lost.
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