<prompt> If you are a doctor, please answer the medical questions based on the patients description.thirty ears old about sixty tow kilogram and one hundred fifty seven height with no previous medical history my question why i feel by strong pulsation on my abdomen when i but weigh on it feeling by strong pulsation on my abdomen when i butting weigh above it i am thirty years old  <response>: Hi Young man. The pulsation are obviously of the very large artery called abdominal aorta. When you put a pressure on the abdomen the transmitted pulsations are felt through. Yet to get a confirmed diagnosis that there is no serious thing going on, it is better to for high resolution ultrasonography and color Doppler examination. This will confirm that everything is fine presence of a cyst above the aorta or any problem with aorta like an aneurysm ... 