Cystic medial necrosis
Aortic aneurysms are typically asymptomatic and often found on CT scans as an incidental finding. Complications like aortic dissection or rupture present with acute onset of severe chest, back, or abdominal pain. A pulsatile mass can be felt in abdominal aortic aneurysms. The aneurysm can compress adjacent structures if rapidly expanding, leading to hoarseness, dysphagia, or wheezing. Hemodynamic instability with hypotension occurs in aortic rupture. Mortality is very high in a ruptured aortic aneurysm.
I77.9 – Disorder of arteries and arterioles, unspecified
42182000 – Cystic medial necrosis
Differential Diagnosis & Pitfalls