[Value of small cystic supratentorial PEG changes].

Small solitary or multiple cystic lesions were found in the hemispheres of 3.6% of all patients suffering from cerebrovascular disorders, seizures, system degeneration or skull or brain injuries who were examined by PEG. Such lesions were especially frequent in patients in their forties to sixties. The absence of corresponding changes in the results of electroencephalographic, scintillation scanning and angiographic examination makes PEG an indispensable tool for prognosis in such cases.