Symptoms:

Aneurysms develop slowly over many years and often have no symptoms. If an aneurysm expands rapidly, tears open (ruptured aneurysm), or blood leaks along the wall of the vessel (aortic dissection), symptoms may develop suddenly.

The symptoms of rupture include:

• Pain in the abdomen or back -- severe, sudden, persistent, or constant. The pain may radiate to the groin, buttocks, or legs.
• Clammy skin
• Nausea and vomiting
• Rapid heart rate
• Shock

Signs and tests:

Your doctor will examine your abdomen. The exam also will include an evaluation of pulses and feeling in your legs. The doctor may find:

• A lump (mass) in the abdomen
• Pulsating sensation in the abdomen
• Stiff or rigid abdomen

You may have an abdominal aortic aneurysm that is not causing any symptoms or problems. Your doctor may find this problem by doing the following tests:

• CT scan of the abdomen
• Ultrasound of the abdomen

Either of these tests may be done when you're having symptoms.