1/4. quadruplets hydatid cysts in brain ventricles: a case report.An 18-year-old male patient with a hepatic hydatic cyst was admitted with cephalgia and gait disturbances. Radiological examination showed a cystic lesion in his liver and four cystic masses, 2-8 mm in diameter, in the right lateral brain ventricle. All cysts were removed without rupture by way of a right transparietal-transventricular approach, using an ellipsoid forceps designed by ourselves. albendazole was given postoperatively. Postoperative outcome was excellent in this case except for transient left hemiparesis. To our knowledge, this is the first case of four hydatid cysts in the lateral brain ventricle.- - - - - - - - - - ranking = 1keywords = cyst (Clic here for more details about this article) |
2/4. Megalencephalic leukoencephalopathy with subcortical cysts in an adult: quantitative proton MR spectroscopy and diffusion tensor MRI.A 37-year-old macrocephalic woman was investigated for increasing gait disturbance due to longstanding spasticity and ataxia. MRI showed widespread bilateral increase in signal from cerebral white matter on T2-weighted images. Numerous subcortical cysts were visible in anterior-temporal and parietal regions. These clinical and neuroradiological features are those of megalencephalic leukoencephalopathy with subcortical cysts (MLC), a recently delineated white-matter disease with onset in childhood. Quantitative localised proton MR spectroscopy of white matter revealed marked reduction of N-acetylaspartate, creatine, and choline with normal values for myo-inositol, consistent with axonal loss and astrocytic proliferation. diffusion tensor imaging showed an increased apparent diffusion coefficient and reduced anisotropy in affected white matter pointing to reduced cell density with an increased extracellular space. These findings are in line with histological changes alterations known to occur in MLC.- - - - - - - - - - ranking = 0.66666666666667keywords = cyst (Clic here for more details about this article) |
3/4. role of dynamic CT myelography in identifying the etiology of superficial siderosis.The authors report three cases of superficial siderosis with a fluid-filled spinal canal cavity communicating with the subarachnoid space. The site of communication was identified with dynamic CT myelography and the defect was surgically repaired.- - - - - - - - - - ranking = 4.8748611902712keywords = arachnoid (Clic here for more details about this article) |
4/4. Noncommunicating spinal extradural arachnoid cyst causing spinal cord compression in a child.Extradural arachnoid cysts in the spine are relatively uncommon causes of spinal cord compression in the pediatric population that are thought to arise from congenital defects in the dura mater. Most reports describe such cysts communicating with the intrathecal subarachnoid space through a small defect in the dura. The authors describe the case of a child who presented with spinal cord compression caused by a large spinal extradural arachnoid cyst that did not communicate with the intradural subarachnoid space. An 11-year-old girl presented with urinary urgency, progressive lower-extremity weakness, myelopathy, and severe gait ataxia. magnetic resonance imaging of the spine demonstrated a large extradural arachnoid cyst extending from T-8 to T-12. The patient underwent a thoracic laminoplasty for en bloc resection of the spinal extradural arachnoid cyst. Intraoperatively, the dura was intact and there was no evidence of communication into the intradural subarachnoid space. Postoperatively, the patient's motor strength and ambulation improved immediately, and no subsequent cerebrospinal fluid leak occurred. Noncommunicating spinal extradural arachnoid cysts are extremely rare lesions that can cause spinal cord compression in children. Because the dura remains intact, they can be removed entirely without subsequent dural repair. The authors review the literature and discuss the proposed underlying mechanisms of formation of these arachnoid cysts.- - - - - - - - - - ranking = 106.6333493066keywords = arachnoid, arachnoid cyst, cyst (Clic here for more details about this article) |