Ascending aortic widening of 44mm is dangerous. The more dangerous cases of ascending aortic widening are usually those caused by aortic aneurysms. A widening of the aorta that is more than 1.5 times the diameter of the aorta in the normal population is called an aortic aneurysm. If the aorta is not widened more than 1.5 times the diameter of the aorta in the normal population, there is usually nothing to worry about. The width of the ascending aorta in the normal population is mostly less than 36 mm. If the width of the ascending aorta is greater than 36 mm, it is considered to be widening of the ascending aorta. For example, if the diameter of the ascending aorta is more than 45mm, or even more than 55mm, the patient needs to be alerted to the existence of aortic aneurysm, which is a very dangerous disease, and at this time need to go to the hospital in a timely manner, and be evaluated by the doctor. In conclusion, when you find that you have a widening of the aorta, whether it is a widening of the ascending or descending aorta, you should pay enough attention to it, and find a professional doctor for examination and diagnosis in a timely manner, so you can’t feel that there are no symptoms and just ignore it.