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Yoshiaki HORI 1,2 , Yasumasa ISHIBASHI 1 , Masato NIIMURA 1 , Shigeo IKEDA 1 1Department of Dermatology, School of Medicine 2Department of ToKyo University School of Medicine pp.321,331-339
Published Date 1971/4/1
DOI https://doi.org/10.11477/mf.1412200786

A 60-year-old man of this disease with a red, soft, hemorrhagic tumor on the diffuse, red macule on the frontal and parietal region was reported.

On autopsy, the local infiltration of the tumor down into the bone marrow of the skull, and the metastasis to the right pleura, right lung and 6th vertebra were revealed.

Histologic specimen of the skin tumor showed the dilatation of the vessels, proliferation and atypicality of the vascular endothelial cells, edema and bleeding in the cutis. The endothelial cells proliferated toward the inside and outside of the vessels. Mytosis of the endothelial cells and multinucleated endothelial cells were also proved.

Electron microscopic pictures showed enlarged endothelial cells, rich in organelles of the cyto-plasma, and with atypical nuclei. The lumen which surrounded these endothelial cells was narrow or stenotic.

These histologic and electron microscopic findings suggested that this disease was a tumor malignantly transformed from the previously existed endothelial cells.


Copyright © 1971, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 1882-1324 印刷版ISSN 0021-4973 医学書院

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