Pseudoaneurysm

aneurysm, falsefalse aneurysmfalse lumen
A pseudoaneurysm, also known as a false aneurysm, is a collection of blood that forms between the two outer layers of an artery, the tunica media and the tunica adventitia.wikipedia
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Aneurysm

aneurysmsaneurismruptured aneurysm
It may be pulsatile and can resemble a true aneurysm.
A false aneurysm, or pseudoaneurysm, is a collection of blood leaking completely out of an artery or vein, but confined next to the vessel by the surrounding tissue.

Traumatic aortic rupture

ruptured aortaaortic rupturedissected aorta
A pseudoaneurysm can also occur in the aorta as a consequence of traumatic aortic rupture.
An angiogram will often show an irregular outpouching beyond the takeoff of the left subclavian artery at the aortic isthmus, representing an aortic pseudoaneurysm caused by the trauma.

Artery

arteriesarterialarterial system
A pseudoaneurysm, also known as a false aneurysm, is a collection of blood that forms between the two outer layers of an artery, the tunica media and the tunica adventitia.

Tunica media

mediamedia wallmedial
A pseudoaneurysm, also known as a false aneurysm, is a collection of blood that forms between the two outer layers of an artery, the tunica media and the tunica adventitia. A dissecting aneurysm is when blood from the vessel lumen tracks between the two inner layers, the intima and the tunica media.

Tunica externa

tunica adventitiaadventitiaouter adventitial layer
A pseudoaneurysm, also known as a false aneurysm, is a collection of blood that forms between the two outer layers of an artery, the tunica media and the tunica adventitia.

Pulsatile flow

pulsatile
It may be pulsatile and can resemble a true aneurysm.

Dissection (medical)

dissectiondissecting aneurysmarterial dissection
A dissecting aneurysm is when blood from the vessel lumen tracks between the two inner layers, the intima and the tunica media.

Tunica intima

intimaintimalinner layer
A dissecting aneurysm is when blood from the vessel lumen tracks between the two inner layers, the intima and the tunica media.

Heart

cardiachuman heartapex of the heart
A pseudoaneurysm may also occur in a chamber of the heart following myocardial damage due to ischemia or trauma.

Cardiac muscle

myocardiumheart musclemyocardial
A pseudoaneurysm may also occur in a chamber of the heart following myocardial damage due to ischemia or trauma.

Ischemia

ischemicischaemiaischaemic
A pseudoaneurysm may also occur in a chamber of the heart following myocardial damage due to ischemia or trauma.

Injury

traumainjuriesphysical trauma
A pseudoaneurysm may also occur in a chamber of the heart following myocardial damage due to ischemia or trauma.

Ventricle (heart)

ventricleleft ventricleright ventricle
A pseudoaneurysm of the left ventricle is a potentially lethal complication from a myocardial infarction.

Myocardial infarction

heart attackheart attacksacute myocardial infarction
A pseudoaneurysm of the left ventricle is a potentially lethal complication from a myocardial infarction.

Abscess

abscessespustularincisional abscess
They can sometimes be confused with abscesses.

Catheter

catheterscatheterizationindwelling catheter
This can include arterial access for catheterization (i.e. the common femoral artery), blunt trauma (i.e. to an extremity), or penetrating trauma (i.e. gunshot or blast injury).

Femoral artery

femoralsuperficial femoral arteryfemoral arteries
This can include arterial access for catheterization (i.e. the common femoral artery), blunt trauma (i.e. to an extremity), or penetrating trauma (i.e. gunshot or blast injury).

Cardiac catheterization

heart catheterizationcardiac catheterisationcardiac catheter
With the high volume of cardiac catheterizations performed today, femoral artery pseudoaneurysms, in addition to pseudoaneurysms of arteriovenous fistulas used for hemodialysis, are the most common.

Stent

stentsstent graftstenting
Since the pseudoaneurysm communicates with an artery through a hole in the arterial wall, a covered stent may be placed endovascularly across this hole to "exclude it," or to prevent it from receiving blood flow from the artery.

Polytetrafluoroethylene

teflonPTFEePTFE
The covered stent is composed of metal and is covered with polytetrafluoroethylene (PTFE) or another sterile fabric-like material.

Warfarin

coumadincoumarinrat poison
Finally, it is also much less successful if the patient is taking aspirin, warfarin (Coumadin), or another anticoagulant, since these would prevent clotting of blood within the pseudoaneurysm.

Thrombin

prothrombinII2
In addition to covered stent placement, another popular, minimally-invasive technique used today is ultrasound-guided thrombin injection. Thrombin (factor IIa in the coagulation cascade)is a clotting factor that converts fibrinogen into fibrin, which then polymerizes to form a blood clot.

Coagulation

blood clottingblood coagulationclotting
In addition to covered stent placement, another popular, minimally-invasive technique used today is ultrasound-guided thrombin injection. Thrombin (factor IIa in the coagulation cascade)is a clotting factor that converts fibrinogen into fibrin, which then polymerizes to form a blood clot.

Fibrin

defibrinatedfibrin modulating agents
In addition to covered stent placement, another popular, minimally-invasive technique used today is ultrasound-guided thrombin injection. Thrombin (factor IIa in the coagulation cascade)is a clotting factor that converts fibrinogen into fibrin, which then polymerizes to form a blood clot.

Ligature (medicine)

ligationligatureligated
If the artery is small and "expendable" - the tissues it supplies have adequate collateral blood flow - then the artery supplying the pseudoaneurysm may be ligated both proximally and distally to the pseudoaneurysm.