BACKGROUND AND OBJECTIVES The loss of resistance to air to identify the epidural space is widely used. However, the accidental perforation of the dura mater is one of the possible complications of this procedure, with an estimated incidence between 1% and 2%. The objective of this report was to describe the case of a patient with intraventricular pneumocephalus after the accidental perforation ...

Thoracic Epidurals: Anatomic Explanation Central neuraxial block has a low incidence of major complications, many of which resolve within 6 months. During attempts to insert a spinal needle into the lumbar subarachnoid space, patients occasionally experience paresthesia, with a reported incidence of 13.6%. Neurologic complications, including spinal cord injury, may arise during administration o...

PURPOSE Spinal surgery in a previously irradiated field carries increased risk of perioperative complications, such as delayed wound healing or wound infection. In addition, adhesion around the dura mater is often observed clinically. Therefore, similar to radiation-induced fibrosis--a major late-stage radiation injury in other tissue--epidural fibrosis is anticipated to occur after spinal radi...

OBJECTIVE To reinvestigate the innervation pattern of the dura mater of rat and human middle cranial fossa, the morpho-functional substrate of headache generation, and adjacent extracranial tissues with neuronal in vitro tracing. BACKGROUND This study was initiated by recent structural and functional findings of meningeal afferent fibers which innervate the cranial dura mater and may project ...

With chromium-hematoxylin staining, we found evidence for the existence of novel age-dependent network structures in the dura mater of rat brains. Under stereomicroscopy, we noticed that chromium-hematoxylin-stained threadlike structures, which were barely observable in 1-week-old rats, were networked in specific areas of the brain, for example, the lateral lobes and the cerebella, in 4-week-ol...

Dear Editor, Two recent papers (Aspelund et al. 2015; Louveau et al. 2015) reported the presence in mice of lymphatics in the cerebral dura mater, the most external of the meningeal layers covering the brain. This datum was reported as a novel discovery in the fields of neuroanatomy and neuroimmunology. However, for the sake of clarity, we would like to highlight the following issues: 1. The pr...

1 of 2 DESCRIPTION A 57-year-old marathon runner presented with orthostatic dizziness and headache, which appeared just after running a few kilometres and had persisted for 7 days. No other neurological abnormalities were found. On lumbar puncture, the initial pressure was zero. A cranial MRI with gadolinium showed a marked enhancement of the dura mater ( fi gure 1 , arrows). MR cisternography ...