Echo-encephalographic studies in patients with space-occupying lesions in the posterior fossa

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Abstract
Echo-encephalographic studies were performed on 57 patients treated for space-occupying lesions in the posterior fossa. Preoperative echo-ventriculography (EVG) on 36 patients showed that 32 (89%) had dilatation of the 3rd ventricle. Of the 4 patients 3 with normal preoperative ventricle width had cerebello-pontine angle tumors. Papilledema was lacking in many cases with considerable ventricular dilatation on EVG. Postoperative examinations on 49 patients showed in most cases a fairly rapid normalization of ventricular size often already during the first 1-4 wk after operation. Papilledema was lacking in many cases with considerable ventricular dilatation on EVG. Postoperative examinations on 49 patients showed in most cases a fairly rapid normalization of ventricular size often already during the first 1-4 wk after operation. Postoperative EVG monitoring of the ventricular system was particularly useful for detection of shunt dysfunctions and recurrence of tumors. Computerized tomography to some extent replaced echoencephalography, but EVG still offers some definite advantages for certain applications in the management of patients with posterior fossa lesions.