[Clinical aspects and therapy of adult hydrocephalus associated with stenosis of the aqueduct of Sylvius].

The author describes 11 cases of adult hydrocephalus based on stenosis of the aqueduct of Sylvius. She describes clinical manifestations and diagnostic possibilities. CT examination and positive VG are most useful for the diagnosis. Clinical signs of rising intracranial pressure, considerable narrowing of or absence of the filling of the aqueduct and hydrocephalus are in the author's opinion the most important criteria of operation. Recanalization of the aqueduct of Sylvius by a drainage tube according to Bret is the optimal surgical approach.