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INTRACRANIAL HEMORRHAGE IN AUTOPSY CASES WITH OCCLUSION OF THE CIRCLE OF WILLIS Kazunari Oka 1 , Kenzo Tanaka 1 , Seizo Sadoshima 2 , Teruyuki Nakashima 3 , Haruomi Nakamura 4 , Satimaru Seno 5 , Katsuji Nakata 6 , Ryuei Maeda 7 , Yoshihiro Hamashima 8 , Masayoshi Takahashi 9 , Goroku Ohta 10 , Tamotsu Kitaoka 11 , Kiyoshi Kotoh 12 , Masamichi Sasaki 13 , Yasuo Nishihara 14 1Department of Pathology, Faculty of Medicine, Kyushu University 2Department of Internal Medicine, Faculty of Medicine, Kyushu University 3Department of Pathology, Kurume University School of Medicine. 4Department of Neuropathology, Institute of Neurological Science, Tottori University School of Medicine 5Department of Pathology, Okayama University Medical School. 6Department of Pathology, Osaka Medical College 7Department of Pathology, Kansai Medical School. 8Department of Pathology, Faculty of Medicine, Kyoto University. 9Department of Pathology, Gifu University School of Medicine. 10Department of Pathology, School of Medicine, Kanazawa University 11Hiroshima Prefectural Hospital. 12Osaka Prefectural Hospital. 13Osaka Red Cross Hospital. 14Kurate Kyoritsu Hospital. pp.1255-1262
Published Date 1979/12/1
DOI https://doi.org/10.11477/mf.1406204511
  • Abstract
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Seventeen autopsy cases with occlusion of the circle of Willis were examined clinicopathologi-cally. These patients ranged in age from 8 years to 64 years and consisted of 6 males and 11 females.

The following results were obtained.

1. Fresh and massive intracerebral hemorrhage was confirmed in 13 of 17 patients and cerebral infarct in 4 of 17 patients.

2. Among these 13 patients, massive hemorrhage was found in basal ganglia, thalamus and hypo-thalamus of 9 patients, and in thalamus, cerebral peduncle and midbrain of 4 patients.

3. Rupture of the dilated muscular-type arteries was noted in the thalamus and basal ganglia in 2 of 13 patients. Ruptured arteries with organization of the lumen were found in the old hemorrhagic foci in one of them.

4. Overgrown and dilated arteries, branching off from the circle of Willis, were confirmed in 11 patients. These arteries consisted of "perforating" arteries well developed as collateral circulation.

5. No rupture in these arteries of the subara-chnoidal spaces was found in 11 patients. In one of them, a small saccular aneurysm was found.

These findings strongly suggest that in patients with occlusion of the circle of Willis intracerebral rupture of overgrown "perforating"arteries as collateral circulation may be the main cause of intracranial hemorrhage and intracerebral hemor-rhage due to rupture of the arteries may be re-peated.


Copyright © 1979, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 2185-405X 印刷版ISSN 0006-8969 医学書院

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