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The Surgical Treatment of Arnold-Chiari Malformation in Adults

An Explanation of Its Mechanism and Importance of Encephalography in Diagnosis

W. James Gardner and Robert J. Goodall

bones in cases of congenital obstructive hydrocephalus. On the other hand, if the infant is unable to assume the erect posture because of an associated myelomeningocele, platybasia should not develop. 4. In acquired platybasia of Paget's disease, osteogenesis imperfecta, and other bone-softening disorders, an Arnold-Chiari-like deformity results from the extrusion of the hindbrain through the foramen magnum due to the encroachment on the volume of the brain case occasioned by the deformity. While this may resemble the congenital variety of true Arnold

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Carl F. List

is more likely to prevent loculation of the empyema. Gurdjian and Webster, 2 and the author, instill about 30,000 to 50,000 units of penicillin in a smaller volume of fluid 3 times daily. The criticism may be voiced that large doses of concentrated penicillin solution in contact with the cortex may produce convulsions, particularly in patients who, due to thrombosis of cortical veins, have become more susceptible to convulsive attacks; yet the danger of convulsions appears a lesser evil than a spread of infection. Seizures, therefore, must be accepted as a

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Loyal Davis, John Martin, Frank Padberg and Robert K. Anderson

– 44 . Davis , L., Martin , J., Goldstein , S. L., and Ashkenazy , M. A study of 211 patients with verified glioblastoma multiforme. J. Neurosurg. , 1949, 6: 33–44. 8. Davis , L. , Martin , J. , and Ruge , D. Midline intracranial tumors in the posterior fossa of children. In: Abraham Levinson Anniversary Volume. Studies in pediatrics and medical history. S. R. Kagan , Ed. New York : Froben Press, Inc. , 1949 , 365 pp. (see pp. 25–35). Davis , L., Martin , J., and Ruge , D. Midline intracranial

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Milton Brougham, A. Price Heusner and Raymond D. Adams

more than a few cc. in total volume, were found on the right side. A mass of reddish, soft tissue protruded from a markedly enlarged sella turcica to compress the floor of the 3rd ventricle and extend into the left temporal lobe and lenticular nucleus ( Fig. 3 ). At all points this mass was well demarcated, displacing but not invading brain, and it was surrounded by a thin capsule of connective tissue. The extrasellar part of the mass was of irregular shape, measuring 6.5 cm. in greatest diameter. The tumor was soft and gray, and parts of it were hemorrhagic. The

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James C. White, Robinson LeR. Bidwell and Charles S. Kubik

volume. The patient was a 72-year-old recluse with a 7-year history of frontal swelling, 5 years of deterioration of mental faculties, and 2 years of weakness in the left arm with epileptic seizures.

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Carotid-internal Jugular Anastomosis in the Rhesus Monkey

Angiographic and Gasometric Studies

E. S. Gurdjian, J. E. Webster and F. A. Martin

side in almost equal numbers. As shown in Table 1 , specimens were obtained from the femoral artery, superior sagittal sinus, and the contralateral jugular before the shunt and after the shunt. Since these animals weighed from 8 to 10 lbs., it was not possible to obtain specimens from all of these vessels in the same animal, because of serious reduction of blood volume. However, in all animals the sagittal sinus blood oxygen content was studied before and after the shunt and arterial blood levels were established in most experiments and in others the oxygen content

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Dwight Parkinson, Winchell Mck. Craig and James W. Kernohan

. The volume of the resected mass was 50 cc. and with its fellow occipital lobe it constituted one-thirteenth or 7.6 per cent of the volume of the supratentorial portion of the brain. TYPES OF BRAIN TUMORS AND INCIDENCE It is generally maintained that the occipital lobe is rarely disturbed by tumors. Unfortunately, for purposes of comparison, most of the cases reported either do not give exact locations or do not indicate whether pituitary body, pineal body, cerebellum or other portions of the brain are included. 6, 13, 33, 35 White, 36 in 1885, reported

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Rudolph Jaeger

hemorrhage, the tumor was entirely isolated from the brain by ligating all of the cortical vessels fastened to it. This exposed the attachment to the superior longitudinal sinus, which appeared to be about 4 cm. in length. The volume of the tumor was considerably reduced by coagulation of the vessels going into it. The dura was closed and the bone flap replaced. 2nd Operation . On Nov. 3, 1944 a bone flap was turned down across the superior longitudinal sinus and directly over the tumor at its attachment to the sinus. There was very troublesome hemorrhage from the veins

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Henry W. Ryder, Frank F. Espey, Frederic V. Kristoff and Joseph P. Evans

femoral artery. Changes in intracranial volume were induced by injecting oil into the extradural space through a tap screwed into the skull, or into the intracerebral substance through a needle inserted into the frontal or occipital pole on the side opposite the insertion of an intracerebral balloon needle. Saline was added to the cerebrospinal fluid and cerebrospinal fluid was withdrawn through the ventricular needle or through a needle inserted into the lumbar subarachnoid space. Inflation of a cuff placed about the neck increased the intracranial venous blood

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Robert C. Bassett

the last large vessel there was a marked decrease in the volume of the lesion, which was then further thrombosed and shrunk down by the electrosurgical unit. She is without signs or symptoms to date. Fig. 12. Case 16 . Frontal and lateral angiograms showing frontal callosal anomaly arising from both anterior cerebral systems with efferent components to the vein of Galen and the inferior sagittal sinus. Case 17 . P.T. was a 21-year-old white female admitted on July 28, 1949. She had been seen frequently as an outpatient for 18 months. She had right