ULTRASTRUCTURAL-STUDY OF HEMANGIOMAS .1. CAPILLARY HEMANGIOMA OF THE SKIN

  • 1 January 1981
    • journal article
    • research article
    • Vol. 31  (1) , 105-115
Abstract
The fine structure of capillary hemangiomas from the skin of 6 young adults was investigated. All the vessels had non-fenestrated endothelial cells. Their intercellular junctions had tight junctions but desmosome-like structures were also present. Cytoplasmic filaments (50-100 .ANG. in width) as well as microtubular bodies were present in some of the endothelial cells. The bodies were .apprx. 0.1 .mu.m in diameter and up to 0.5 .mu.m in length. Subendothelial basement membrane was present and sometimes multilaminated. Pericytes had a feature of endothelial cells, fibroblasts, or smooth muscle cells. Fibrous long-spacing collagen fibrils (periodicity: 700-1500.ANG.) were seen in the vicinity of pericyte basement or in the intervascular spaces.

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