Showing papers in "Surgical Neurology in 1985"

TL;DR: The anatomy needed to plan microoperative approaches to the region of the foramen magnum was examined in 25 cadaveric heads and structures examined included the lower cranial and upper spinal nerves.

TL;DR: The growth rate of intracranial meningiomas was studied against a histologic grading based on the degree of anaplasia and both the mitotic index and the absence of calcification on the computed tomography scan correlated strongly with the doubling time.

TL;DR: A peak incidence was noted in the fourth decade with 75% of the protruded discs occurring below T-8 and a success rate ranging from 57% for decompressive laminectomy to over 80% for the posterolateral, lateral, and transthoracic approaches.

TL;DR: At operation, 21 meningeal intracranial hemangiopericytomas resembled meningiomas, but differed histologically, and had a higher risk of recurrence and metastasis.

TL;DR: All types of stereotactic neurosurgery are performed with computed tomography guidance only, and the short-term results in a small number of patients have been at least as good as after conventional ventriculography-guided surgery.

TL;DR: The principal advantage of this technique is that it allows the hypothalamus, even in cases in which the structure is remarkably displaced upwards, the third ventricular walls in cases of the intraventricular extension of the tumor, and the inferior surface of the optic chiasma and nerves to be visualized directly and thus safely preserved.

TL;DR: Larger hemorrhages, hemorrhages in the suprasellar region, and hemorrhages associated with other types often preceded a poor outcome, and major etiologies underlying postoperative intracerebral hemorrhages were uncontrolled bleeding from a blind area, difficult dissection of a tumor from the brain, and hypertensive putaminal hemorrhage.

TL;DR: The pertinent literature on giant cell tumors originating from the cranial bones other than the sphenoid bone is reviewed.

TL;DR: Meningitis, traumatic subarachnoid hemorrhage, posterior fossa mass, supratentorial clot with contralateral ventricular dilatation, and craniotomy contributed to the development of posttraumatic hydrocephalus.

TL;DR: A case of a large middle fossa arachnoid cyst that spontaneously disappeared is reported and the possible mechanisms involved in the "natural cure" of this lesion are discussed.

TL;DR: A direct correlation exists between the degree of anterior bowing, number of consecutive laminae the wire passes beneath, and the complication rate, which indicates that there is a high likelihood of complications caused by sublaminar wiring of consecutive vertebrae.

TL;DR: Seven cases drawn from 620 consecutive cases over 30 years are presented, in which previously undemonstrated intracranial aneurysms formed and ruptured at intervals of 3-20 years, after clipping of an initialAneurysm, to discuss the implications as to natural history and the advisability of repeated arteriography in some patients with aneurYSms.

TL;DR: The occurrence of primary malignant lymphomas of the central nervous system in a population of approximately 1 million people has been analyzed retrospectively, and the importance of making a correct diagnosis preoperatively is stressed, as radical operation is unfavorable for these patients.

TL;DR: It is concluded that atherosclerosis may not have a basic role in the pathogenesis of arterial ectasia, but the severe reticular fiber deficiency in the media associated with extensive defects in the elastic lamina forms the morphologic basis of ectasias.

TL;DR: Ten aneurysms of the horizontal portion of the anterior cerebral artery (A1) were analyzed and the multiplicity of aneurYSms, the coexistence of hypertension, the grade of the patients, the laterality of the subarachnoid blood clots and surgical outcome were analyzed.

TL;DR: It is proposed that 5 ng/mL baseline growth hormone values with normal dynamic testing is the most reliable way to ascertain biologic cure and cautioned against early normalization of growth hormone as a criterion forBiologic cure.

TL;DR: In this series, 128 patients were operated upon and total resection of the malformation was performed on 119 occasions, and there were 70.3% good results from a long-term point of view.

TL;DR: Eighteen misconceptions or "myths" surrounding the treatment of aneurysmal subarachnoid hemorrhage have been identified as factors that have largely determined the currently accepted, ineffective treatment protocols, and these are discussed.

TL;DR: Caudate damage produced by proximal occlusion resulted in such secondary alterations as enhanced blood flow and metabolism in areas remote from the main lesion, such as in the globus pallidus and substantia nigra ipsilateral to occlusions, which are suggested to contribute to a varied neurological dysfunction after focal cerebral ischemia.

TL;DR: The clinical and neuroradiologic findings and surgical results in a series of 19 patients with lateral ventricle meningioma, operated on during a 33-year period, are described.

TL;DR: This technique gives a wide superior and lateral exposure of the orbital contents for microsurgical removal of orbital tumors, particularly applicable to large orbital neoplasms, tumors in the orbital apex, growths with intracranial extension, and medial orbital tumors.

TL;DR: The biopsy specimens of 342 patients with malignant glioma were evaluated and the presence of round cell infiltration in tissue was associated with a poor prognosis.

TL;DR: The arteries of the circle of Willis in fetal brains of 20-40 weeks of gestational age were studied with the operating microscope and in the majority of cases a polygon, much like the "precarious" circle in adults, was dissected.

TL;DR: Eight cases with well-documented normal-pressure hydrocephalus were studied prospectively for 6 months by history, neurological examinations, Mini-Mental Status tests, xenon-contrast computed tomography measurements of local cerebral blood flow, and cerebral xenon solubility expressed as partition coefficients.

TL;DR: Regional cerebral blood flow was measured by the 133Xe inhalation method in 20 young patients with moyamoya disease and five young healthy volunteers and was at an almost average value in the posterotemporal and occipital regions, which was different from the "hyperfrontal" pattern in healthy volunteers.

TL;DR: Six patients with inoperable, nonoperative, or recurrent meningiomas were treated with the antiestrogenic agent tamoxifen (Nolvadex) during an 8-12-month period and the 2-year results did not indicate a favorable response to antiestrogensic treatment.

TL;DR: Suboccipital craniectomy to evacuate the hematoma is the most effective procedure where treatment is indicated; the clinical recovery of the survivors show that 31% return to work, 38% are moderately disabled but take care of themselves, and 31% remain dependent on others.

TL;DR: In cranial trauma, it is proposed to subdivide the syndrome of inappropriate secretion of antidiuretic hormone into two clinical forms: an early syndrome that becomes apparent towards the second day and is significantly associated with lesions at the base of the skull; and a delayed syndrome that occurs at the end of the first week and is related to different factors inherent in intensive care procedures.

TL;DR: Wide experience over a 20-year period with 1000 interventions for radiculomyelopathy caused by cervical arthrosis is reported, and results are analyzed according to clinical signs, surgical methods, timing of operation, influence of pathogenic phenomena, age, and preexisting illness.

TL;DR: The case of a 66-year-old woman who developed both trigeminal neuralgia and hemifacial spasm caused by a tortuous vertebrobasilar system is reported.