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. 1979 Dec;103(13):683-7.

Light and electron microscopic observations of blood vessels in neurilemoma

V Kasantikul, A D Glick, M G Netsky
  • PMID: 583128

Light and electron microscopic observations of blood vessels in neurilemoma

V Kasantikul et al. Arch Pathol Lab Med. 1979 Dec.

Abstract

A study of 105 cases of neurilemoma disclosed frequent alterations of blood vessels, including hyalinized walls. Many vascular walls were formed by tumor cells. Two cases were analyzed by electron microscopy, and showed fenestrae, patent interendothelial gap junctions, and leakage of RBCs. The presence of erythrocytes in the gap junction and outside vessels is a factor acounting for xanthochromia of the CSF, and serum leakage for the frequent increase in CSF protein in cases of neurilemoma. Attenuation of endothelial cells increases the liability of vessels to bleed within the tumor. Massive bleeding may cause subarachnoid hemorrhage on rare occasions. Hyalinized vessels and dense collagen are features contributing to the relative infrequence of major hemorrhage. Evidence is presented that Schwann and perineural cells are similar.

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