網(wǎng)友正在提問
胸主動脈瘤是由于各種原因造成的主動脈一處或多處向外膨出，出現(xiàn)的像“瘤子一樣”的改變。胸主動脈瘤指的是發(fā)生在主動脈竇、升主動脈、主動脈弓或降主動脈的動脈瘤，是退行性變，胸部主動脈部分異常擴(kuò)張，變形，呈瘤樣突出。
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