Diagnosis,therapy & late surgical results in cervical nerve root compression syndrome

Zusammenfassung Das klinische Syndrom der Halsnervenwurzelkompression kann außer den lateralen cervicalen Discushernien auch durch völlig verschiedene ätiologische Faktoren hervorgerufen werden (komprimierende Arterie, Exostose usw.).9 operierte Fälle von Halsnervenwurzelkompression wurden in der Zeitspanne von 1 bis 7 Jahren nach dem Eingriff einer Kontrolluntersuchung unterzogen.Die Späterfolge der Operation waren als sehr gut bzw. gut zu bezeichnen.Recidive oder Todesfälle ereigneten sich unter diesen Fällen nicht.

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Summary The clinical syndrome of cervical nerve-root compression may — apart from lateral cervical disc herniation — be caused by a variety of etiologic factors f. i. a compressing artery, an exostosis etc. 9 cases of cervical root compression were observed during periods ranging between 1 to 7 years after operation, late results of surgery being very good or good.In these cases no relapse or mortality occurred.

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Resumen El síndrome clínico de la compresión de las raices cervicales puede ser causado, aparte de las hernias discales cervicales laterales por otros factores etiologicos como ser la 9 casos de compresión de las raices cervicales fueron reexaminados de 1 a 7 años después de la intervención. Los resultados fueron excelentes, respectivamente buenos. Entre estos casos no hubo ni recidivas ni muertes.

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Résumé La cause d'une compression radiculaire cervicale peut être outre l'hernie latérale discale, quelquefois la compression par une artère, par des exostoses etc. — 9 cas ont été examinés dans un délai de 1 à 7 ans après l'intervention chirurgicale. Les résultats ont été très bien ou bien. Pas de récidives, pas de complications mortelles.

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Riassunto La sindrome clinica da compressione delle radici dei nervi cervicali puó essere provocata, oltre che dalle ernie del disco cervicali, anche da fattori eziologici molto diversi: arterie che coprimono, esostosi etc. 9 casi operati per compressione delle radici nervose cervicali furono sottoposti ad esami di controllo per un lasso di tempo variabile da 1 a 7 anni dopo l'intervento. I risultati a distanza dell'operazione possono essere segnalati come molto buoni o relativamente buoni.Fra questi casi non si sono verificate né récidive né esiti letali.

     

Frequency domain discriminant analysis of the electroencephalogram

A frequency domain generalization of the classical quadratic discriminant function was applied to the problem of classifying alpha-band multichannel electroencephalogram recordings in three task conditions. The data consisted of 41-channel recordings obtained in eyes closed, verbal, and spatial task conditions. Classifier performance was measured by deriving a decision rule from a training sample of 42 recordings and then applying the obtained rule to a test sample of 46 recordings The proportion of correct classification was 93 in the training sample and 85 in the test sample. The classifier performed better when based on the complete cross-spectral matrix than when restricted to power spectrum variables Classification based on a subset of 16 leads reduced the overall proportion of correct classification to 79 in the training sample and to 70 in the test sample.     

Cell Processes in Basal Cell Carcinoma

Three cell process types are described in basal cell carcinoma. The most abundant are thin processes resembling microvilli; thick processes, mesa-like structures often surmounted by desmosomes; and large bulging processes. Processes occur in the intercellular spaces, and are more numerous in spinocellular cells than in basaloid cells. Despite the abundance of processes in basal cell carcinoma, they do not usually penetrate the basal lamina border of the tumor. This behavior differs from more rapidly invasive squamous cell carcinoma where processes extend through the fragmenting basal lamina into the stroma.