Abdominal aortic aneurysm
AAAs are most commonly diagnosed in men with a smoking history, but other risk factors for development are advanced age, previous aneurysm, atherosclerotic disease, hypertension, hypercholesterolemia, a family history of AAA, and White race.
Aneurysms expand with time but typically remain asymptomatic until rupture. Thus, patients require serial abdominal ultrasounds following diagnosis to assess the rate of growth and risk of rupture, with rupture risk directly correlating with the size of the aneurysm. In the rare patients who complain of symptoms prior to rupture, these most commonly include abdominal, back, or flank pain. Other signs and symptoms may include hematuria, gastrointestinal hemorrhage, or lower extremity ischemia. A pulsatile periumbilical abdominal mass may be found on physical examination with a bruit heard on auscultation.
Identifying an AAA is essential as mortality associated with rupture is 85%-90% and still as high as 50%-70% in patients who make it to the hospital after a rupture.
Related topic: cystic medial necrosis
I71.4 – Abdominal aortic aneurysm, without rupture
233985008 – Abdominal aortic aneurysm
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