Occlusive hydrocephalus caused by a fourth ventricle arachnoid cyst.

The case history of a woman with occlusive hydrocephalus caused by a fourth ventricle cyst is presented. She had slowly progressive complaints and symptoms--concentration and memory disturbances, low-tempered mood, then slight dizziness, loss of appetite and progressive headache--transitorily misinterpreted for signs of depression. She had been treated by psychotherapy and antidepressants for months.

[MR investigations in stroke].

In the article digital imaging methods are presented with special emphasis on the use on diagnostics of cerebral circulation studies. Recently, fundamental changes have happened in this field, concerning especially the MR investigations. These changes have influenced the therapeutic strategies of ischaemic stroke.

[MR investigation of spinal cord herniation in the thoracic spine].

Transdural herniation of the spinal cord is thought to be previously extremely rare and very often misdiagnosed. Possible reasons may be iatrogenic and traumatic or in about one third of cases it may be unknown, where the probable origin might be a congenital dural defect. The pathology may show characteristic and misleading MR patterns of the thoracic spine, emphasising the importance of these patterns.