[Arteriovenous malformations of the dura mater].

The authors present two cases of dural arteriovenous malformations treated in Dept. of Neurosurgery, Warsaw Medical School. The main clinical problems of this type of AVM are discussed.

The results of the surgical treatment of occipital lobe epilepsy.

Out of 502 patients with surgically treated drug-resistant chronic epilepsy (tumour cases excluded) in 12 (2%) a clear occipital focus was found. The pattern of seizures was in most cases nonspecific and polymorphic. EEG examination and neuroradiological findings led to proper localization of the epileptogenic focus.

Neuropathological changes in resected temporal lobe of patients with cryptogenic epilepsy.

The study was performed on cerebral tissue resected during temporal lobectomy in 16 patients whose long-standing cryptogenic epilepsy did not submit to anticonvulsive drugs. Cases presenting definite etiological factors such as CNS trauma, infection or neoplasm were excluded. Neuropathological investigations disclosed microangiomas and focal vascular malformations in the meninges and tissue in 7 patients.

[Value of testing vibration sensation in diagnosing spondylogenic pain syndromes].

One-hundred patients with cervical vertebral changes, 100 with lumbar vertebral changes and 20 with ankylosing spondylitis were studied carrying out examinations of the sensation of touch, pain and vibration in these dermatomes and sclerotomes which are related to the levels of the most frequently occurring intervertebral disc changes. It was found that disturbances of the vibration sensation occurred significantly more frequently than disturbances of surface sensitivity, and their character suggested that they were a more specific sign of damage to the innervation of the spine than segmental disturbances of superficial sensitivity which are due to root damage.