…The aortic wall is made up of three layers: the intima, media, and adventitia. Dissection of the aorta refers to a condition in which the media separates into two layers, the inner and outer layers, and blood flows into the media, forming a hematoma. In aortic dissection, the intima usually tears, and the tear (called an entry) spreads to the inner part of the media. There are few cases in which the media is normal, and in most cases there is underlying degeneration of the media, and in many cases it occurs in conjunction with hypertension, congenital heart disease, Marfan syndrome, endocrine disorders, pregnancy trauma, aortitis, etc. … *Some of the terminology explanations that mention "entry" are listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…大動脈の壁は内膜,中膜,外膜の3層からなるが,中膜が内外2層に解離して,そこに血液が流れこんで血腫が形成された状態をいう。大動脈の解離では,内膜が裂け,裂け目(エントリーentryという)が中膜の内層寄りの部分に広がっていくのが普通である。中膜が正常である場合は少なく,大部分は基礎に中膜の変性がみられ,高血圧症,先天性心疾患,マルファン症候群,内分泌異常,妊娠外傷,大動脈炎などに合併しておこる例が多い。… ※「entry」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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