title: Ultrastructural investigation on cutaneous angioleiomyoma.
abstract: Electron-microscopic examination of a cutaneous angioleiomyoma demonstrated that the muscular coat enveloping the blood vessels is formed of typical smooth muscle cells. The central vessels exhibit the ultrastructural features of small venules with a prominent endothelium and large numbers of Weibel-Palade bodies. Except for scanty unmyelinated nerve fibers accompanying small arterioles, no significant nerval structures were encountered. In view of the evident ultrastructural differences, a relationship of angioleiomyoma and glomus tumor can be ruled out.
mesh_terms: D000368:Aged; D004727:Endothelium / Q000648:ultrastructure; D005260:Female; D006391:Hemangioma / Q000098:blood supply / Q000648:ultrastructure*; D006801:Humans; D007889:Leiomyoma / Q000098:blood supply / Q000648:ultrastructure*; D008854:Microscopy, Electron; D009131:Muscle, Smooth, Vascular / Q000648:ultrastructure; D012878:Skin Neoplasms / Q000098:blood supply / Q000648:ultrastructure*