Clinical, radioanatomical, and therapeutic aspects of dural arteriovenous malformations in the region of the transverse sinsu are discussed on the basis of seven personal observations and the analysis of 72 reported cases. Common symptoms are headache and troublesome tinnitus aurium. More serious neurological deficiencies may occur as a result of distrubance in cerebral hemodynamics. A complete neuroradiological investigation is essential for adequate treatment. Most frequent arterial feeders are the occipital, tentorial, and middle meningeal arteries. Ligation of the occipital artery is not sufficient in most cases. Operative isolation of the transverse sinus by craniotomy and dural section is considered by far the most successful treatment and should be performed whenever ligations fail or are not indicated.
The authors describe five cases of an uncommon complication after Dimer X Myelography consisting in a more or less complete lesion of the caudia equina. Up to the present only seven similar cases have been reported in the literature. The evolution and the clinical symptoms of these cases were similar to those reported by others. While in the cases presented the clinical outcome was favourable, with complete recovery in all cases, less favourable evolutions with definitive neurological symptoms are described by others.
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