1:55-3:27
Dissection on the other hand is different. Dissection means that there's a tear in the wall of the artery or the aorta and blood then flows between those layers and what that does is then as you can see in the picture in black and white, I don't have an arrow to show you but you see where I said I label false lumen and true lumen and then there's a line in between them, so that is a dissection where the inner liner has sheared off.
動脈の解離とは、動脈や大動脈の壁に裂け目ができて、そこから層と層の間へと血液が流れ込むことを指します。スライドの白黒画像には、偽腔（False lumen）と真腔（True lumen）があり、その間に線が入っているのが見えると思います。この画像のように、内側の膜が剥がれた状態を解離と呼びます。
And what that does is a couple things. One is it can weaken the wall of the the false lumen. The artery or the aorta on that side becomes weaker and it can bulge out over time and become an aneurysm or it can cut off blood flow to branch arteries that are coming off that, that main artery or it can clog, block the artery itself, so that's why dissections are problematic either because they weaken the artery, they can cause rupture or like I said they can occlude the artery or block it off.
解離によって、いくつかの問題が起こります。まず偽腔の壁が弱くなることが挙げられます。偽腔側の動脈や大動脈が時間とともに膨らんで動脈瘤となり、大動脈から分岐する動脈への血流を遮断したり、分岐動脈自体を塞いでしまうことがあります。解離が起こると、動脈が弱くなって破裂を引き起こしたり、動脈を塞いだりといった問題が生じます。
Depending on where they are there's different terminology but basically you reference it to where it is in the artery and then you know if it's in the aorta you'll say, you know, is it in ascending aorta or the descending aorta or commonly you'll hear the terminology type A and type B dissections, next slide.
解離は起きた場所によって疾患名が変わります。動脈で起きた解離であれば、原則「動脈名」＋「解離」になりますし、大動脈であれば、上行大動脈か下行大動脈かに応じて、A型解離、B型解離となります。これについては皆さんよくご存知だと思います。
And you can have aneurysms and dissections in the same person and not necessarily in the same arteries. So this is a CT scan. It's a side view of a cut of somebody's aorta showing you that they have an aneurysm on one side say they have an ascending aneurysm and then they have a descending thoracic aortic dissection where the arrow shows dissection and this is a person who had Marfan syndrome, so you can say you can see that both of them can coexist in a person, next slide.
動脈瘤と解離が両方とも同じ患者さんに起こることがあります。必ずしも同一の動脈で起こるとは限りません。こちらのCTは大動脈を横からみた画像です。矢印で示されているとおり、上行大動脈には動脈瘤があり、下行大動脈では解離が起こっています。このように、一人の患者さんに動脈瘤と解離が両方とも見られることがあります。
The Marfan Foundation did not participate in the translation of these materials and does not in any way endorse them. If you are interested in this topic, please refer to our website, Marfan.org, for materials approved by our Professional Advisory Board.
The Marfan Foundation は、当翻訳には関与しておらず、翻訳内容に関してはいかなる承認も行っておりません。このトピックに興味をお持ちの方は、Marfan.org にアクセスし、当協会の専門家から成る諮問委員会が承認した内容をご参照ください。
