microdysgenesia

Increase in partially distopic neurons in the stratum zonale, white matter, hippocampus and cerebellar cortex, producing an indistinct border between cortex and subcortical white matter and a columnar arrangement of cortical neurons; seen in patients with primary generalized epilepsy. [micro- + dys- + G. genesis, production]

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mi·cro·dys·ge·ne·sia (mi″kro-dis-jə-neґzhə) subtle abnormalities of neurons in the area surrounding the hippocampus and cerebellum, seen in cases of epilepsy.