true aneurysm

true an·eu·rysm

localized dilation of an artery with an expanded lumen lined by stretched remnants of the arterial wall.
References in periodicals archive ?
True aneurysm rupture of omental artery leading to hemoperitoneum and shock in a CAPD patient.
A pseudoaneurysm, albeit rare (3), is more likely to rupture than is a true aneurysm and thus is a post-MI complication that warrants urgent surgery (4).
Histology demonstrated a true aneurysm where all three layers (intima, media, and adventitia) of the arterial wall were seen and showed focal degenerative changes.
There was focal intramural and perivascular hemorrhage with some thinning of the portal vein, but a true aneurysm was not identified.
2) As with any imaging modality, on CT a true aneurysm should have a relatively wide mouth or neck (Figure 13).
Although not identified here, true aneurysm formation at the site of repair is not uncommon in patients who have undergone prior synthetic patch aortoplasty, while it is infrequent in those repaired with end-to-end anastamosis or interposition grafting.
in that true aneurysms are an abnormal dilatation or ballooning of the artery, containing all three normal layers of the vessel wall (endothelium, media, and adventitia).
PAU may be complicated by the development of true aneurysms, pseudoaneurysms (Figure 15), dissection and aortic rupture (Figure 16)4.
True aneurysms characteristically have an anteroapical location with a wide ostium (more than 50% of the aneurysm diameter).