Here's a simpler version of the text for a 5th grader:
The large blood vessel in the chest, called the distal thoracic aorta, looks normal. A tube that helps feed people is sitting in the stomach. There is some extra fluid on the left side and a small area where the lungs aren’t fully inflating. Some important blood vessels in the belly are open, but one of them has a blockage that makes it 80% smaller. The aorta is normal. Another artery connected to the aorta is also open. There are some calcium deposits in the blood vessels, but they aren’t blocking anything much.
In the right leg, the main blood vessels are open and working well. There is moderate plaque build-up, which is like a sticky coating, in some of them. In one narrow area, the blood flow is about 50% blocked. The main artery behind the knee is open. There are three main blood flow routes but one of the branches is getting blocked, which means blood might not flow as well in those smaller arteries down to the ankle.
For the left leg, the major arteries are also open and functioning. However, one of the arteries is almost completely blocked, and there is some clotting (which is like a scab inside the blood vessel) blocking the flow to the knee. There are many calcium deposits in the smaller branching blood vessels, which means they don’t have much blood flowing through them. At the ankle, the blood seems to be rerouted, allowing it to get through even though there are blockages.