Incidental Discovery of an Inferior Vena Cava Aneurysm

Aneurysm of the inferior vena cava with thrombosis

“…Venous aneurysms are rare and defined as persistent isolated venous dilatation that is twice the normal diameter of 1.5–3.7 cm . The pathological factors that cause IVC aneurysm include trauma, inflammatory processes, long‐standing hypertension, and congenital defects . Various imaging modalities have been used for the diagnosis of IVC aneurysm.…”

Aneurysmal Dilatation of the Inferior Vena Cava

“…Congenital weak-ness of the IVC has been suggested with some authors indicating that it occurs at the sites of anastmoses of embryologic veins where failure of regression or abnormal fusion may be the reason. 14,15 Longstanding venous hypertension due to outflow obtrruction or valvular heart disease may be etiologic in IVCA formation. 15,16 In addition, trauma, inflammation, amyloid infiltration, degenerative, IVC webs, or neoplasms may be responsible.…”

Nonoperative management of traumatic suprahepatic inferior vena cava pseudoaneurysms

“…By definition, an aneurysm is the dilatation of all three layers of the vessel wall and can be classified as congential, acquired, or secondary to arteriovenous fistulas. 1,2 In contrast, a pseudoaneurysm is a pulsatile hematoma with disruption of one or more vessel layers and is always acquired. A small tear of the IVC leads to slow extravasation of blood, allowing the areolar tissue to form a sac, thus creating an unstable environment with a high rate of rupture.…”