[Hydrocephalus in Paget's disease--a case report].

A case of Paget's disease in an elderly female who had a favourable evolution following ventriculoperitoneal (V-P) shunt is reported. On May 28, 1983, a 52-year-old female was transferred and admitted to us from the Dept. of Neurology because of headache in the occipital region and ataxic gait. On admission, neurological examinations revealed remarkably increased tendon reflexes, ataxic gait, and mild dementia. Headache was also observed, but urinary incontinence was not present. Skull X-ray showed "cotton wool appearance", which was characteristic of Paget's disease. On chemical analysis of blood and urine, serum Al-P and urinary OH-proline level were elevated, which established a diagnosis of Paget's disease. Triventricular dilatation was found on CT scan, and neck tomography showed basilar impression. After admission, the patient was treated with calcitonin, but it was interrupted because of side effects such as nausea and vomiting. Then she gradually took a turn for the worse, particularly dementia became severer. On July 25, 1983, V-P shunt was performed. After operation, "soft landing maneuver" was employed, namely the intraventricular pressure was checked and was gradually lowered with external CSF drainage system for 7 days. Thereafter the patient's head was elevated gradually from supine to sitting position through 7 days. Her hospital course after operation was that of gradual improvement. The purpose of this maneuver was to prevent sudden change of intraventricular pressure that causes aggravation of basilar impression and sudden respiratory arrest.