它的发生是因为血管中的血流量减少了。
It occurs because blood flow gets reduced in that blood vessel.
这种血管瘤还可能发生在内脏，往往不容易发现。
This hemangioma also may occur in the gut, often do not easy to find.
但是它并不能完全抑制新生血管的发生。
However, it can not entirely inhibit the occurrence of new blood vessels.
血管瘤可能发生的并发症有哪些？
肿瘤血管生成与肿瘤的发生和转移密切相关。
Tumor angiogenesis plays an important role in tumor growth and metastasis.
偏头痛：一再复发的血管性头痛，通常发生于头部的一侧。
Migraine: Recurrent vascular headache, usually on one side of the head.
大血管开始发生动脉粥样硬化。
新生血管生成在肿瘤的发生和生长过程中是一个至关重要的事件。
Angiogenesis is one of the crucial events for cancer development and growth.
对照组6例发生血管反应。
结论：高血糖患者更易发生缺血性脑血管病。
Conclusion: Patient with hyperglycemia is easily to happen ischemic cerebrovascular disease.
肿瘤血管的发生是肿瘤生长和转移的病理基础。
目的探讨免疫性血管炎与动脉粥样硬化(as)发生的关系。
Objective To study the relationship between immune vasculitis and atherosclerosis (as).
DR为微血管病变，其发生机理仍不十分清楚。
DR is the microvascular disease and its pathogenesis is still not very clear.
DR为微血管病变，其发生机理仍不十分清楚。
DR is the microvascular disease and its pathogenesis is still not very clear.
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