Dissection (medical)
TEAR WITHIN THE WALL OF A BLOOD VESSEL
Arterial dissection; Aneurysm, dissecting; Dissecting aneurysm; Dissection (medical)
A dissection is a tear within the wall of a blood vessel, which allows blood to separate the wall layers. Usually, a dissection is an arterial wall dissection, but rarely it may be a vein wall dissection (VWD).