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151 Schmidt, Meic H.Spinal extradural arachnoid cysts: clinical, radiological, and surgical featuresExtradural arachnoid cysts in the spine are rare and are seldom a cause of spinal cord compression. They are thought to arise from congenital defects in the dura mater, and they almost always communicate with the intrathecal subarachnoid space through a small defect in the dura. The mainstay of trea...Spinal extradural arachnoid cyst; Spinal meningeal cyst; Neurogenic claudication2007
152 Schmidt, Meic H.Minimally invasive thoracoscopic resection of paraspinal neurogenic tumors: technical case reportOBJECTIVE: The posterior mediastinum is a common location for benign neurogenic tumors. They are frequently asymptomatic but can present with local compressive or neurological symptoms. METHODS: Thoracoscopy is used increasingly over posterolateral thoracotomy for the removal of these lesions. RES...2008-01-01
153 Couldwell, William T.; Schmidt, Richard H.Ruptured intracranial dermoid cysts: clinical, radiographic, and surgical featuresIntracranial dermoid cysts are pathologically characterized by a thick, stratified squamous epithelium cyst wall containing dermal elements. Rupture into the subarachnoid spaces and ventricles is extremely rare. We review the clinical, radiographic, and surgical features of eight ruptured dermoid c...Dermoid cyst; Intracranial; Rupture; Tumor2008
154 Couldwell, William T.; MacDonald, Joel D.Revision of vagal nerve stimulator electrodes: technical approachPurpose To demonstrate the feasibility of complete removal of the vagal nerve stimulator electrode using microsurgical technique. Methods Operative databases at the University of Utah (1995 through 2002), Westchester Medical Center (1995 through 2001), and University of Arizona Health Sciences Ce...Vagal nerve stimulation; Helical electrode; Electrode revision2004
155 Couldwell, William T.Unruptured posterior communicating artery aneurysm presenting with gustatory seizures and temporal lobe edemaUnruptured cerebral aneurysms presenting with seizures are unusual. We describe a case of a growing middle cerebral artery aneurysm presenting with gustatory seizures with magnetic resonance imaging showing peri-aneurysmal edema. This case is the first to show temporal lobe edema associated with inc...Seizure; Brain edema; PCOM2009-04
156 Couldwell, William T.Medpor implant in cranioorbitomaxillary reconstruction: institutional experience and a review of the literatureAutologous materials remain the gold standard for complex skull base and craniofacial reconstruction, but they carry additional morbidity associated with the second harvest procedure and with prolonged operation time. These autologous materials also resorb in a way that is not predictable, rendering...Medpor; Alloplastic material; Autogenous tissue; Craniofacial reconstruction; Skull base surgery; Methylmethacrylate; Silicone2008
157 Schmidt, Meic H.Diagnosis and management of sacral Tarlov cystsPerineurial (Tarlov) cysts are meningeal dilations of the posterior spinal nerve root sheath that most often affect sacral roots and can cause a progressive painful radiculopathy. Tarlov cysts are most commonly diagnosed by lumbosacral magnetic resonance imaging and can often be demonstrated by com...Tarlov cysts; Meningeal dilations; Spinal lesion; Outcome2003
158 Couldwell, William T.Conflict and opportunity: neurosurgery and industryThe relationship between neurosurgery and industry is multifaceted. Most aspects of this relationship promote the advancement of a highly technical field such as neurosurgery, helping neurosurgeons bring ever more effective therapies to their patients. However, serious ethical and legal concerns a...2007-01-01
159 House, Paul A.; Couldwell, William T.De novo fenestration of the optic nerve case illustration.Fenestration of the optic nerve or chiasm due to the presence of aneurismal dilation of the internal carotid artery (ICA) has been described. In three out of five cases reviewed recently, the optic nerve was penetrated by an ICAΓÇôophthalmic artery aneurysm.3 Penetration of the optic nerve was du...Aneurysm; Congenital Optic Nerve2005-02-01
160 Kestle, John R. W.; Walker, Marion L.Retained peritoneal shunt tubing causing hematuriaThis 14-year-old boy with congenital hydrocephalus underwent initial shunt placement shortly after birth. During his first 6 years of life, multiple ventriculoperitoneal (VP) shunt revisions were performed to address seven shunt malfunctions and one shunt infection (Staphylococcus epidermidis). Dur...2006
161 Schmidt, Meic H.Perioperative complications and neurological outcomes of first and second craniotomies among patients enrolled in the Glioma Outcome ProjectIn many new clinical trials of patients with malignant gliomas surgical intervention is incorporated as an integral part of tumor-directed interstitial therapies such as gene therapy, biodegradable wafer placement, and immunotherapy. Assessment of toxicity is a major component of evaluating these no...Perioperative complications; Neurological outcomes; Glioma Outcome Project2003
162 Dailey, Andrew T.Guidelines for the performance of fusion procedures for degenerative disease of the lumbar spine. Part 1: introduction and methodologyAs scientific understanding of the pathophysiology of degenerative disease of the lumbar spine has increased, the possibilities for correcting the underlying problem and the resulting improvement in clinical function have expanded exponentially. Fueled by advances in material technology and surgica...Lumbar fusion; Lumbar spine; Degenerative disease; Practice guidelines2005
163 Schmidt, Meic H.Cervical spine deformity associated with resection of spinal cord tumorsPostoperative sagittal-plane cervical spine deformities are a concern when laminectomy is performed for tumor resection in the spinal cord. These deformities appear to occur more commonly after resection of intramedullary spinal cord lesions, compared with laminectomy for stenosis caused by degener...Kyphosis; Cervical deformity; Intramedullary tumor; Laminectomy; Children2006
164 Kestle, John R. W.Assessing the validity of the endoscopic shunt insertion trial: did surgical experience affect the results?Object. Most surgical procedures are associated with a learning curve in which the success rate is lower early in the experience before mistakes have been identified and modifications made to the procedure. Negative results obtained early in a trial's learning curve may be a matter of timing rather ...Endoscopic shunt insertion; Ventriculoperitoneal shunt; Pediatric neurosurgery; Surgical experience2004-01-01
165 Dailey, Andrew T.Risk factors for respiratory failure following operative stabilization of thoracic and lumbar spine fracturesBackground: Respiratory failure is a serious complication that can adversely affect the hospital course and survival of multiply injured patients. Some studies have suggested that delayed surgical stabilization of spine fractures may increase the incidence of respiratory complications. However, the...Respiratory failure; Operative stabilization; Thoracic spine; Lumbar spine2006
166 Kestle, John R. W.Moyamoya phenomenon after radiation for optic gliomaThe role of radiotherapy in the management of patients with optic pathway glioma is controversial. In a series of patients with optic pathway glioma treated at The Hospital for Sick Children in Toronto, five children were encountered who developed moyamoya phenomenon after radiotherapy. A retrospec...Optic pathway glioma1993
167 Couldwell, William T.; Orlandi, Richard R.; Apfelbaum, Ronald I.Novel closure technique for the endonasal transsphenoidal approach: Technical noteTranssphenoidal microsurgery has been the standard approach to sellar lesions since the repopularization of the technique with modifications by Dott, Guiot, and Hardy. The endonasal transseptal transsphenoidal approach, as introduced by Hirsch, is still commonly used by pituitary surgeons to remove ...2004
168 Couldwell, William T.Pituitary apoplexy: diagnosis and managementPituitary apoplexy, an uncommon complication of pituitary adenomas, was first decribed in 1898 when pearce Bailey reported hemorrhage into a pituitary adenoma in a 50 year old man with acromegaly. The patient presented with sudden onset of headache, nausea, vomiting, fever, oculomotor palsies, and v...Pituitary Apoplexy; Pituitary adenoma; Transsphenoidal surgery2003
169 Couldwell, William T.Ganglion cyst of the temporomandibular joint with intracranial extension in a patient presenting with seventh cranial nerve palsyGanglion cysts arising from the temporomandibular joint are rare entities that often present with swelling and minimal to no pain in the preauricular region. To the Author's? knowledge, a temporomandibular joint ganglion cyst occurring with acute facial nerve palsy and intracranial extension has ne...2012
170 Couldwell, William T.Metastatic melanoma to the pituitary glandMetastasis to the pituitary gland is unusual, and occurs most often in patients with carcinomas of the breast or lung. Despite its propensity for spread to the brain, metastatic melanoma has rarely been described within the sella. Methods: We report two cases of malignant melanoma pathologically co...2007
171 Schmidt, Meic H.Frameless stereotactic image-guided C1-C2 transarticular screw fixation for atlantoaxial instability: review of 20 patientsAtlantoaxial instability can result from trauma, rheumatoid arthritis, congenital malformation, or tumor invasion. The goal of treatment is stabilization of the C1-C2 complex to prevent neurologic and neurovascular compromise. First described in 1987 by Magerl and Seemann, C1-C2 transarticular screw...Transarticular screws; Atlantoaxial instability; Frameless stereotaxy; Cervical spine; Surgical navigation; Trajectory planning2005
172 Schmidt, Meic H.; Kestle, John R. W.Treatment of metastatic spinal epidural disease: a review of the literatureObject. Spinal cord compression is one of the most dreaded complications of metastatic cancer. It can lead to a number of sequelae, including pain, spinal instability, neurological deficits, and a reduction in the patient's quality of life. Except in selected circumstances, treatment is palliative. ...Spinal cord compression; Metastasis; Radiation therapy; Stereotactic radiosurgery2003
173 Kestle, John R. W.Relationship of intraoperative electrophysiological criteria to outcome after selective functional posterior rhizotomyAt British Columbia's Children's Hospital, the criteria used in selective functional posterior rhizotomy (SFPR) evolved in three distinct phases. In Phase 1 the electrophysiological criteria for abnormality included a low threshold to a single stimulation, a sustained response to 50-Hz stimulation, ...Selective posterior rhizotomy; Electrophysiological criteria; Intraoperative electrical stimulation1995
174 Schmidt, Meic H.Medical applications of space light-emitting diode technology-space station and beyondSpace light-emitting diode (LED) technology has provided medicine with a new tool capable of delivering light deep into tissues of the body, at wavelengths which are biologically optimal for cancer treatment and wound healing. This LED technology has already flown on Space Shuttle missions, and show...Photodynamic therapy; Lutetium Texaphyrin; Lutex; Canine glioma1999
175 Kestle, John R. W.; Walker, Marion L.Adjustment and malfunction of a programmable valve after exposure to toy magnetsInadvertent adjustments and malfunctions of programmable valves have been reported in cases in which patients have encountered powerful electromagnetic fields such as those involved in magnetic resonance imaging, but the effects of small magnetic fields are not well known. The authors present a ca...2004
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