[Spinal deformations as a cause for the clinical signs of spinal cord neoplasm].

An attempt was made to explain the unusual clinical manifestations at the example of an observation of a spinal-marrow tumor, which had the neurological lesion symptoms only below the upper-thoracic level. Scoliosis with a minor spinal deformation at the level of the fourth thoracic vertebra was a tumor symptom. It is suggested that the spinal scoliosis, having a mechanical impact on the spinal marrow and on its provision with blood in the minor-deformation location, was the reason of impaired sensitivity and movements, which is indicative of the spinal-marrow lesion not only in the mentioned locations but also in the total length of tumor localization.

[Impairment of visual pathway function in right hemisphere in patients with arteriovenous malformation of the parietooccipital area of left hemisphere].

Marked arteriovenous malformation in the left parietooccipital area manifested only by symptoms of associative migraine involving changes of visual fields indicative of impaired functions of symmetrical compartments of the other brain hemisphere. Visual evoked potentials were changed in this patient because of dysfunction of both hemispheres and largely because of disorders in brain structures symmetrical to the site of arteriovenous malformation. This can be regarded as a manifestation of the so-called stealing phenomenon, when blood supply to one brain compartment is decreased because of excessive blood delivery to other regions of the brain.

Voice evaluation before and after laser excision vs. radiotherapy of T1A glottic carcinoma.

Quality of voice after treatment for T1A glottic squamous cell carcinoma was studied in two matched groups of males treated either with CO2 laser cordectomi (n = 18, mean age 65.2 years) or with full dose radiotherapy (n = 18, mean age 65.1 years).

[Structural organization of medical information as illustrated by diagnosis in child neurology].

Structuration of medical information is performed on three levels: structuration of the specialist's knowledge with resultant singling out key questions--blocks required for diagnosis in the given field; structuration of signs within the space of the blocks; identification of diagnostic syndromes basing on their signs analysis adjusted to resolving diagnostic tasks. The results of the method application in neuropathology are outlined.