J Neuroradiology
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Review Case Reports
Imaging in the exploration of lumbosacral plexus avulsion. Two cases.
In all cases of post-traumatic sensorimotor deficit in the lower limbs unexplained by another pathology, it is not unreasonable to suspect a nerve root avulsion. Whenever available, MRI seems to be the choice examination as it is not invasive and provides a three-dimensional exploration. On the basis of two new cases and a review of the literature, the authors discuss the value of various imaging methods in this pathology.
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The authors report the results of 89 vertebral biopsies performed under CT guidance, classified according to the type of pathology and the site of the lesion. A correct diagnosis was obtained in 89 cases. No complication was observed. The value of CT guidance in vertebral biopsy is emphasized.
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In this study the structures of the three meningeal membranes which surround the spinal cord and delineate the perispinal spaces are described. The pia mater is composed of a deep layer and a superficial layer. This structural arrangement accounts for the relations of the pia mater with the spinal vessels and the cerebrospinal fluid (CSF). ⋯ Meningeal structures similar to the cranial arachnoidal granulations are described, and the question of CSF physiology is considered. The secretion and circulation of the CSF are briefly described, and the problem of spinal resorption is discussed. CSF resorption can be effected by ascending, lymphatic or venous routes.