Dorsal arachnoid web
نویسندگان
چکیده
منابع مشابه
Dorsal Arachnoid Web and Scalpel Sign: A Diagnostic Imaging Entity.
MATERIAL AND METHODS A case of 60-year-old woman with idiopathic syringomyelia and progressive myelopathy by dorsal arachnoid web is discussed. One focal indentation along the dorsal surface of the spinal cord at the T3 vertebral body level revealed the scalpel sign, a radiologic entity diagnostic of a dorsal thoracic arachnoid web. RESULTS T2-T3 laminectomy for the resection of dorsal arachn...
متن کاملMystery Case: Scalpel sign: Dorsal thoracic arachnoid web.
A 44-year-old man presented with 1 year of gradually progressive lower limb weakness and numbness and bowel and bladder incontinence. Neurologic examination revealed a T8 spinal sensory level and spastic paraparesis. Preoperative imaging (figure) of the thoracic spine revealed the scalpel sign, a radiologic entity diagnostic of a dorsal thoracic arachnoid web. The lesion was surgically and hist...
متن کاملDorsal thoracic arachnoid web and the "scalpel sign": a distinct clinical-radiologic entity.
Arachnoid webs are intradural extramedullary bands of arachnoid tissue that can extend to the pial surface of the spinal cord, causing a focal dorsal indentation of the cord. These webs tend to occur in the upper thoracic spine and may produce a characteristic deformity of the cord that we term the "scalpel sign." We describe 14 patients whose imaging studies demonstrated the scalpel sign. Ten ...
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Extradural arachnoid cyst in the spine is an uncommon cause of spinal cord compression in the paediatric population. Most reported cysts have communication with the intrathecal subarachnoid space through a small defect in the dura. The reported child had spinal cord compression caused by a large spinal extradural arachnoid cyst in dorsal spine that did not communicate with the intradural subara...
متن کاملArachnoid Granulations and Arachnoid Villi in Mammals
There has been no general agreement regarding the presence of arachnoid granidations and arachnoid villi in mammals. This seems to have arisen from the fact that various workers have used different criteria in distinguishing between the two terms — 'granula tion' and 'villus'. Luschka (1852) was the first to. define the structure observed macroscopically as an 'arachnoid granulation', while fo...
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ژورنال
عنوان ژورنال: Neurosurgical Focus
سال: 2014
ISSN: 1092-0684
DOI: 10.3171/2014.v3.focus14273