OBJECTIVE To determine whether either of two mechanical theories predicts the topographic pattern of neuropathology in cervical spondylotic myelopathy (CSM). The compression theory states that the spinal cord is compressed between a spondylotic bar anteriorly and the ligamenta flava posteriorly. The dentate tension theory states that the spinal cord is pulled laterally by the dentate ligaments,...

Background: Spinal cord herniation and thoracic anterior adhesion syndrome make up the two extremes of a rare condition; characterized by anterior dural adhesion or protrusion of the spinal cord through the arachnoideal and dural membrane into the extradural space, respectively. Summary: We present the main features of the condition by our case series and forward a hypothesis for the consistent...

Background: The post-dural puncture headache (PDPH) is a common complication in spinal anesthesia. Headache may occure seven days after dural puncture. The headache may be worsened in sitting position and be better in supine position. PDPH is common in younger and tall people. The incidence rate of PDPH related to the size of spinal needle and the number of try and decrease with small, cutting ...

A spinal dural arteriovenous fistula is an abnormally layered connection between radicular arteries and venous plexus of the spinal cord. This vascular condition is relatively rare with an incidence of 5-10 cases per million in the general population. Diagnosis of spinal dural arteriovenous fistula is differentiated by contrast-enhanced magnetic resonance angiography or structural magnetic reso...

Background: Spinal cord herniation and thoracic anterior adhesion syndrome make up the two extremes of a rare condition; characterized by anterior dural adhesion or protrusion of the spinal cord through the arachnoideal and dural membrane into the extradural space, respectively. Summary: We present the main features of the condition by our case series and forward a hypothesis for the consistent...

We report a case of craniocervical dural arteriovenous fistula with perimedullary venous drainage associated with cervical myelopathy in which spinal angiography showed a normal venous phase after injection of the artery of Adamkiewicz. We conclude that because of the complex venous drainage of the spinal cord, a dural arteriovenous fistula with spinal drainage cannot be ruled out solely becaus...

BACKGROUND AND PURPOSE Conventional spinal angiography, although useful in providing angioarchitectural details of spinal vascular disease, has limitations. The advent of 3D angiography has provided a better comprehension of angioarchitectural detail when evaluating the intracranial circulation. The purpose of this study was to evaluate the usefulness of 3D angiography in the diagnosis and trea...

BACKGROUND Functional aspects of mast cell-neuronal interactions remain poorly understood. Mast cell activation and degranulation can result in the release of powerful pro-inflammatory mediators such as histamine and cytokines. Cerebral dural mast cells have been proposed to modulate meningeal nociceptor activity and be involved in migraine pathophysiology. Little is known about the functional ...

A 44-year-old woman was examined for progressive left lower extremity weakness and spasticity. Thoracic spine MR imaging and CT myelography showed a ventral dural defect at T7-T8 with an extradural subarachnoid fluid collection and extradural herniation of the spinal cord. Intraoperative sonography confirmed the appropriate level for dural entry and the finding of spinal cord herniation. After ...

We would like to propose floating dural sac sign, which is observed as a hyperintense band or rim around the spinal dural sac on axial T2-weighted images, as a sensitive sign to identify cerebrospinal fluid (CSF) leakage. One hundred patients with orthostatic headache were prospectively registered in 11 hospitals. These patients were examined by brain magnetic resonance (MR) imaging (n = 89), r...