镜下主动脉破裂贯穿中膜

镜下见主动脉的破裂（箭头所指）贯穿整个中膜，而且可见中膜血液渗出（星号所指）。

Microscopically, the tear (arrow) in this aorta extends through the media, but blood also dissects along the media (asterisk).