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Osborn, A.; Thurman, D.; Dyk, H.
doi: 10.1007/BF00327440pmid: 643168
234 15 15 1 1 A. G. Osborn D. J. Thurman H. J. L. Van Dyk Department of Radiology and Medicine, and the Division of Ophthalmology University of Utah College of Medicine Salt Lake City Utah USA Summary The ocular choroidal plexus can be identified on virtually all normal internal or common carotid angiograms. Posterior flattening of the choroid is often seen with retrobulbar tumors. This angiographic appearance can also be observed in some patients with papilledema and increased intracranial pressure. In these patients, ampulliform dilatation of the dura and subarachnoid space just posterior to the globe produces a retrobulbar mass effect that can mimic true retrobulbar tumor. Enlargement of the ocular choroid crescent is an unusual angiographic finding and can be seen with intraocular expansile lesions such as unilateral axial high myopia with posterior staphyloma. An abnormally small, shrunken choroidal blush can be seen with microphthalmia, extreme degrees of hyperopia, and in the phthisical eye.
Kido, D.; Gomez, D.; Santos-Buch, Ch.; Caston, T.; Potts, D.
doi: 10.1007/BF00327441pmid: 643169
234 15 15 1 1 D. K. Kido D. G. Gomez Ch. A. Santos-Buch T. V. Caston D. G. Potts Department of Radiology Cornell University Medical College and the Neuroradiology Research Laboratory William Hale Harkness Building New York NY USA Department of Radiology New York Hospital-Cornell Medical Center 525 E. 68 St. 10021 New York NY USA Summary Cerebral and ocular microaneurysms were produced in rabbits made hypertensive by surgically induced silk-turpentine perinephritis combined with contralateral nephrectomy 7 days later. The aneurysms distributed throughout the brain and iris were studied by microradiography; a few representative aneurysms selected from the microradiographs were studied histologically. The microradiographic findings and histological sections correlated well. Intracranial microaneurysms were multiple and frequently located in the basal ganglia and near the cortex. Arterial changes in the iris paralleled intracranial arterial changes in degree and type except for the addition of hemorrhage around some microaneurysms. The results of this study show the potential of microradiography and histological sections guided by microradiography for studying the natural history of hypertensive arterial lesions and support the contention that hypertension, microaneurysms and intracerebral hemorrhages are related.
Suzuki, S.; Kuwabara, Y.; Hatano, R.; Iwai, T.
doi: 10.1007/BF00327442pmid: 643170
234 15 15 1 1 S. Suzuki Y. Kuwabara R. Hatano T. Iwai Department of Radiology Tokyo Medical and Dental University School of Medicine Tokyo Japan I Department of Surgery Tokyo Medical and Dental University School of Medicine Tokyo Japan Summary A verified case of duplicate origin of the left vertebral artery in association with a large aneurysm arising from the aortic arch immediately distal to the left subclavian artery is presented. An anomalous left vertebral artery arises directly from the aortic arch between the left common carotid and subclavian arteries, and joins with the normal left vertebral artery in the transverse foramen of the fifth cervical vertebra.
Lasjaunias, P.; Théron, J.; Moret, J.
doi: 10.1007/BF00327443pmid: 643171
234 15 15 1 1 P. Lasjaunias J. Théron J. Moret Department of Radiology Bicêtre Hospital Le Kremlin Bicêtre France Department of Neuroradiology C. H. U. Caen France Radiology Fondation Ophtalmologique A. de Rothschild Paris France Service de Radiologie Hôpital du Kremlin-Bicêtre 78 avenue du Général Leclerc F-94270 Kremlin-Bicêtre France Summary An anatomical and radioanatomical study of the intracranial branches of the occipital artery is presented and attempt to systematize the muscular branches of the occipital trunk and its vertebral anastomosis. An embryological hypothesis is presented to explain and memorize all the artrial variations of this area.
Lobato, R.; Escudero, L.; Lamas, E.
doi: 10.1007/BF00327444pmid: 643172
234 15 15 1 1 R. Diez Lobato L. Escudero E. Lamas Departments of Neuroradiology and Neurosurgery Ciudad Sanitaria “1o de Octubre” Madrid Spain Instituto national de prevision Ciudad sanitaria de la seguridad social “1o de octubre” Madrid Spain Summary The case of a patient with a fistula between the left internal carotid artery and the cavernous sinus, and another fistula between the right external carotid artery and the cavernous sinus, is reported. The clinical symptomatology, which was of spontaneous onset, was unilateral and consisted of exophthalmos and injection of the conjunctiva on the left side. Almost complete remission occurred after angiography.
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