NCIt definition : The creation of hematoma outside the arterial wall following bleeding due to puncture
of the arterial wall. Pseudoaneurysms can also occur in the heart chambers following
myocardial infarction and bleeding.;
Alternative definition : FDA: The creation of hematoma outside the arterial wall following bleeding due to
puncture of the arterial wall. Pseudoaneurysms can also occur in the heart chambers
following myocardial infarction with rupture of the wall of the ventricle.;