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Morphological changes of small pulmonary arteries induced by ventilation and perfusion disturbances:An analysis of cases with lung cancer and emphysema Katsuyuki Endo 1 , Takesaburo Ogata 2 , Kazumi Matsumoto 2 1Department of Surgery, Institute of Clinical Medicine, The University of Tsukuba 2Department of Pathology, Institute of Basic Medical Sciences, The University of Tsukuba pp.395-400
Published Date 1984/4/15
DOI https://doi.org/10.11477/mf.1404204430
  • Abstract
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Seventy-eight lobes from patients with cancer were histologically studied in order to investigate influences of ventilation disturbance (bronchial stenosis or pleural adhesion) and perfusion disturb-ance (arterial stenosis) upon structural changes of small pulmonary arteries. Intima of the small pul-monary arteries were thickened in 79% of ventila-tion-disturbed, but 11% of ventilation-undisturbed lobes. About a half of these thickening was due to proliferation of myointimal cells. Morphometric studies in 14 lobes with lung cancer revealed the following percentages of intimal and medial thick-ness ; 46% and 20% in both ventilation and perfu-sion disturbed lobes, 40% and 20% in only ventila-tion disturbed lobes, and 20% and 13% in lobes without disturbances. Those in emphysematous lungs were 41% and 15%, and 12% and 11% in seven control lungs. These findings suggested that focal hypoxic state induced by ventilation disturb-ance was one of the important factors of intimal and medial thickening of small pulmonary arteries in lobes with lung cancer, like those with emphy-sema.


Copyright © 1984, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 1882-1200 印刷版ISSN 0452-3458 医学書院

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