The case of the disappearing abdominal aneurysm
DEAR DR. ROACH: In January, I received a diagnosis of an abdominal aortic aneurysm measuring 2.9 centimeters. In April, another ultrasound showed that the AAA measured 3 cm. This past October, I had another ultrasound and was told there was no AAA! The doctor said it must have disappeared, or maybe it was just a “dilatation that was misdiagnosed because the report shows nothing.”
Now, it would be great if I don’t have an AAA, but two ultrasounds by two different entities came up with the same diagnosis five months apart, and everything I’ve read says AAAs don’t diminish in size or disappear completely. What is your take on this latest development? Should I request another ultrasound for confirmation, or can I be confident (and thrilled) that the latest results showing no AAA were correct? — K.M.
ANSWER: The aorta is the largest blood vessel in the body, coming directly off the left ventricle in the heart and providing arterial blood to the entire body. It can dilate, either in the chest or in the abdomen, and when it does, the risk of rupture increases as it gets larger. It must measure greater than 3.0 cm to be considered aneurysmal, so yours may not even have made the cutoff.