Clinical Study of Post-traumatic Normal Pressure Hydrocephalus

The discovery of C-T scan have facilitated the detection of post-traumatic hydrocephalus cases. Of those, 6 cases of hydrocephalus of non-parenchymatous in origin, in other words, normal pressure hydrocephalus were presented. They were diagnosed by repeated brain C-T and cisternography with Iodine 131-labeled human serum albumin. The symptomatology, diagnosis procedure and surgical results were discussed. Followings are the results. 1) The RIHSA cisternogram taken after 6 hrs, 12 hrs, 24 hrs and 48 hrs from lumbar injection showed abnormal features in all cases. 2) Surgical results were thought that there is much correlation with the age and improvement of mental impairments were seen, more or less, in all cases and improvement of gait disturbance and incontinence were seen in 5 cases and 4 cases respectively. 3) In those who sustained severe head injury with delayed recovery, the authors think, repeated check of brain C-T and cisternography is necessitated to perform the V-P shunt or V-A shunt to relieve the symptomatology of normal pressure hydrocephalus.

A Case of Malignant Lymphoma of the Cerebellum

Primary malignant lymphoma of the central nervous system which is characterized by high radiosensitiveness is rarely reported in the literature. We have experienced a case of recurred cerebellar lymphoma whose criginal site was septal area. Though septal tumor disappeared completely after radiation, a large cerebellar tumor was found 2 years thereafter. After decompressive suboccipital craniectomy and partial tumor removal the patient's general condition improved so secondary radiation and chemotherapy were started. In the course of port-op therapy, the patient abruptly deteriorated and succumbed.