No abstract available.
Subarachnoid Space* ; Syringomyelia*

The authors present a case of intracerebral ependymal cyst involving the left parietal lobe. The cyst had no communication with ventricular system or subarachnoid space. The clinicopathological features, radiological findings and surgical treatments are discussed including a review of literatures.
Parietal Lobe ; Subarachnoid Space

A hyperintensity in the subarachnoid space on fluid-attenuated inversion-recovery (FLAIR) images is often caused by diseases such as subarachnoid hemorrhage or meningitis. Oxygen has a known paramagnetic effect and also causes signal changes in the subarachnoid space on FLAIR images. These changes usually develop when the inspired air contains a high oxygen fraction. Here we present a patient with a hyperintensity in the subarachnoid space on FLAIR images whose inspired air contained only a low oxygen fraction.
Humans ; Meningitis ; Oxygen* ; Subarachnoid Hemorrhage ; Subarachnoid Space*

Most of Tarlov or perineurial cysts remain asymptomatic throughout the patient's life. The pathogenesis is still unclear. Hemorrhage has been suggested as one of the possible causes and trauma with resultant hemorrhage into subarachnoid space has been suggested as an origin of these cysts. However, Tarlov cysts related to spontaneous subarachnoid hemorrhage has not been reported. The authors report a case of Tarlov cyst which was symptomatic following spontaneous subarachnoid hemorrhage.
Hemorrhage ; Subarachnoid Hemorrhage ; Subarachnoid Space ; Tarlov Cysts

Cysticercosis of the central nerve system seldom involves spinal structures. When it does, the parasites grow much more often in the subarachnoid space than within the cord or epidural space. Recently we have experienced a cases of intramedullary cysticercosis in thoracic cord, which was characterized by paraparesis and voiding difficulty of 1 1/2 years duration in 34-year old man, and the patient's symptoms were improved after operation. We discuss this rare condition with brief review of the literature relevant to spinal cysticercosis.
Adult ; Cysticercosis* ; Epidural Space ; Humans ; Paraparesis ; Parasites ; Subarachnoid Space

The case of a 30-year-old woman with a spinal extradural meningeal cyst in the thoracolumbar region is reported. The cyst was detected in the retromedullary space between vertebra T12 and L3. A Dural defect was found in the operation field and through the defect, there was communication between the cystic cavity and the subarachnoid space. Closure of the defect, with partial resection of the cystic wall, was sufficient to obliterate the cystic cavity.
Adult ; Female ; Humans ; Spine ; Subarachnoid Space

There are several mechanisms for the dissemination of lipid material from a mature teratoma into the subarachnoid space or ventricles, including iatrogenic or traumatic rupture, but spontaneous rupture of a mature teratoma is rare. We report the spontaneous rupture of a spinal mature teratoma into the subarachnoid space and ventricles. However, at surgery, there was no definite evidence of rupture into the perimedullary cerebrospinal fluid. We postulate that the central canal could be a migration pathway for ruptured material into the brain.
Brain ; Rupture ; Rupture, Spontaneous ; Subarachnoid Space ; Teratoma

Intracranial ependymal cysts are rare, congenital, benign lesions. These commonly occur in the supratentorial regions and usually generate no symptoms. The cerebellopontine angle (CPA) is an extremely rare site for ependymal cysts. Furthermore, there are no previous reports of CPA ependymal cysts related to syncope. We report a case of ependymal cyst in the left CPA with syncope. The patient underwent a cardiologic evaluation for syncope after admission, but there were no definite cardiologic abnormal findings. He underwent fenestration into the subarachnoid space, and the pathologic diagnosis revealed an ependymal cyst. We analyzed this case with review of other literatures.
Cerebellopontine Angle ; Diagnosis ; Humans ; Subarachnoid Space ; Syncope*

To observe the anesthetic characteristics of two different speeds of injection using 0.5% plain bupivacaine during spinal anesthesia, 40 patients undergoing lower extremity surgery were allocated randomly into two groups. In one group, 3 ml of 0.596 plain bupivacaine was administered into the subarachnoid space using 25 gauge Quincke spinal needle to the patients with a lateral horizontal position at duration of 10 seconds. In the other group, the duration was 180 seconds. There were no statistically significant differences between two groups in maximal level and its onset time of sensory blockade, hemodynamic changes, onset time to grade 3 Bromage motor blockade. We concluded that the speed of injection does not affect the anesthetic characteristics of spinal anesthesia using 0.5% plain bupivacaine.
Anesthesia, Spinal* ; Bupivacaine* ; Hemodynamics ; Humans ; Lower Extremity ; Needles ; Subarachnoid Space

OBJECTIVE: To evaluate the changes of intracranial cerebrospinal fluid(CSF) dynamics in communicating hydrocephalus, the authors present an analysis of various parameters of cine magnetic resonance(MR) CSF flow images in case of progressive communicating hydrocephalus. METHODS: The MR images were obtained with 1.5T(GE Signa, GE Medical Systems, Milwaukee, USA) unit using the 2 dimensional cine phase contrast sequence with cardiac gating and gradient recalled echo imaging in 10 communicating hydrocephalus and 10 controls. Various parameters of the aqueduct and cervicomedullary subarachnoid space were plotted as wave forms. The wave forms were analyzed for configurations, amplitude parameters(Vmax, Vmin, Vdif), and temporal parameters(R-MSV, R-D, R-MDV, R-S). The statistical significance of each parameter examined with paired t-test. RESULTS: Distinct reproducible configuration features were obtained at both ROIs. We could determine the statistically significant differences between control and communicating hydrocephalus in temporal parameters at the aqueduct level. There was no significant differences at the cervicomedullary subarachnoid space level. In communicating hydrocephalus, the graph showed R-MDV(p=0.005) and R-S(p=0.001) shortening at the aqueduct. CONCLUSION: The analysis of cine MR CSF flow study may be helpful for diagnosing the communicating hydrocephalus and even deciding the necessity of shunting procedures. The temporal parameters are more important than amplitude parameters for diagnosing communicating hydrocephalus.
Cerebrospinal Fluid ; Hydrocephalus* ; Magnetic Resonance Imaging, Cine ; Subarachnoid Space