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Eldridge Campbell and Christian Keedy

either the fifth or eighth nerve or both.” Most of these were operative findings, having been associated with tic douloureux or Ménière's syndrome. (He recorded no instance of hemifacial spasm.) In 9 of the 11 the bulge of the artery had been to the left. In each of our cases the disorder was left-sided. It is thus suggested that vascular disorders at the base of the posterior fossa may account for a proportion of the cases of the so-called idiopathic hemifacial spasm. More observations in this connection are highly desirable. SUMMARY AND CONCLUSIONS Two

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The Clinical Use of Fluorescein in Neurosurgery

The localization of brain tumors

George E. Moore, William T. Peyton, Lyle A. French and Walter W. Walker

encountered while scanning the literature concerned with cerebral vascular disorders. Broman 1 postulated that the permeability-regulating function of the brain vessels did not cease with the death of the animal and attempted a similar study of human brains removed soon after death. He reported that with a perfusion of 0.2 per cent trypan blue, and subsequent washing out of the residual dye in the vessels, the normal brain remained unstained. On the contrary, areas of non-necrotic tumor tissue, abscesses, edema, and demyelination (multiple sclerosis) showed diffuse

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Clovis Vincent

His Life and Main Contributions to Neurosurgery

Jacques Le Beau and J. B. Tavernier

, to a cerebellar hemisphere or to a temporal lobe. Vascular Intracranial Disorders The main interest of Vincent in this category was directed towards the early diagnosis of angiomas and aneurysms of the brain. He insisted upon the strong suspicion of such a condition in patients suffering from repeated diffuse meningeal hemorrhages. 37 Other vascular disorders especially studied in la Pitié were the intracranial form of hypertensive disease, intraventricular hemorrhage, 18 and the non-traumatic hematomas, either subdural, or intracerebral, or

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Sympathectomy of the Upper Extremity

Evaluation of Surgical Methods

Bronson S. Ray

theoretically could be assured only by sectioning motor roots important to muscular function of the limb. Even so, the various preganglionic or postganglionic operations currently employed for sympathectomizing the upper limb often produce good clinical results though they fall short of being perfect. There is no need to abandon sympathectomy for appropriate cases of vascular disorders of the upper extremity but there is need for clear thinking on the matter of the most effective and practical way to perform the operation within the limits of the possibilities. It appears

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Frank P. Smith

the ordinary office register. The terminology is diversified to the point of redundancy. Tables 1 and 2 present outlines for classification of cases and operations respectively—designed according to incidence and relation. Revisions have been made in the course of practical application. TABLE 1 Cases I. TRAUMA  C. Craniosynostosis  A. Head  D. Dermal sinus   1. Fracture of skull  E. Miscellaneous   2. Concussion cerebral IV. VASCULAR DISORDERS   3. Intracranial hematoma  A. Aneurysm   4. Post

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Contrast Medium Injury to the Spinal Cord Produced by Aortography

Pathologic Anatomy of the Experimental Lesion

G. Margolis, A. K. Tarazi and K. S. Grimson

diameter of each radicular artery is designated by an appropriate letter, according to the classification indicated in the box. DISCUSSION The contrast medium lesion produced in these investigations is so far beyond the grade of injury previously observed in experimental studies of the effects of these substances that it compels a re-evaluation of the toxic potential of these agents. On the basis of these observations it is evident that the concept of the effect as a transient vascular disorder, exemplified by the statement of Broman and Olsson 9 “… the

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Arteriography and Vasospasm

The Effects of Intracarotid Contrast Media on Vasospasm

Richard B. Raynor and Gerald Ross

is a clinical impression that the incidence of complications following this procedure is greater in primary vascular disorders and in conditions that also involve the vasculature secondarily. Pool et al. 11 felt that vasospasm may be important in the etiology of symptoms of some of these disorders. If this is so, then it is possible that the cerebral vasculature may exhibit additional spastic phenomena under the influence of contrast media. Decreased flow of blood to an already damaged area could be expected to cause or enhance clinical symptoms. A transient

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Total Cerebral Blood Flow and Oxygen Consumption Using the Dye-Dilution Method

A Study of Occlusive Arterial Disease and Cerebral Infarction

Frank R. Hellinger, Byron M. Bloor and John J. McCutchen

this type of measurement in order to evaluate more critically cerebral vascular disorders and their medical and surgical treatment. Dr. John E. Adams : I wish to thank Dr. Hellinger and Dr. Collins for their kind remarks. There is no question in my mind but what it is necessary to utilize a more precise method of recording data with this electrode in order to make the data quantitative and meaningful. For this reason, therefore, we are forced to conclude that for the time being we can accomplish more by studying cortical pO 2 in the experimental animal than we

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.3171/jns.1964.21.5.0364 Treatment of Intracranial Vascular Disorders with the Aid of Profound Hypothermia and Total Circulatory Arrest: Three Years' Experience Collin S. MacCarty John D. Michenfelder Alfred Uihlein May 1964 21 5 372 377 10.3171/jns.1964.21.5.0372 Decompression of a Cervical Nerve Root by the Anterior Approach Captain Richard B. Raynor Lt. Colonel Allen F. Kingman Jr. May 1964 21 5 378 380 10.3171/jns.1964.21.5.0378 Local Petechial Reactions Following Cerebral Angiography with Hypaque Robert B. Daroff