the etiological factors , preoperative clinical and anatomical status of the patients , their surgical career , the reasons for revision operations and causes of death , are analyzed and discussed in relation to each of the four groups constituting the series : tetraventricular communicating hydrocephalus , triventricular hydrocephalus , obstructive hydrocephalus from ventriculocisternal block and postmeningocele or postmyelomeningocele hydrocephalus .
C0549423
obstructive hydrocephalus
C0020255
hydrocephalus