What causes narrow stools? Should I be concerned? Narrow stools that happen now and then probably are harmless. But in some cases, narrow stools — especially if pencil thin — may be a sign that the colon is narrowing or has a blockage. And that could be due to colon cancer.
Valvuloplasty A valvuloplasty is a treatment to repair a heart valve that has a narrowed opening. Narrowing of a heart valve is called valve stenosis. Four heart valves — the aortic, mitral, tricuspid and pulmonary valves — open and close to let blood flow through the heart. In a narrowed heart valve, the valve flaps, also called leaflets, may become thick or stiff and fuse together. Valve ...
Causes Scar tissue, which can narrow the urethra, can be due to: A medical procedure that involves putting a tool, such as an endoscope, into the urethra. A tube that's put into the urethra to drain the bladder, called a catheter. Trauma or injury to the urethra or pelvis.
Atherosclerosis is a specific type of arteriosclerosis. Atherosclerosis is the buildup of fats, cholesterol and other substances in and on the artery walls. This buildup is called plaque. The plaque can cause arteries to narrow, blocking blood flow. The plaque also can burst, leading to a blood clot. Although atherosclerosis is often considered a heart condition, it can affect arteries ...
Scar tissue can narrow the aortic valve opening. It also may make a rough surface on which calcium deposits can collect. Risk factors Risk factors of aortic valve stenosis include: Older age. Some heart conditions present at birth, called congenital heart defects. An example is a bicuspid aortic valve. Long-term kidney disease.