Microaneurysm

Microaneurysm /mi·cro·an·eu·rysm/ a microscopic aneurysm, a characteristic of thrombotic purpura. mi·cro·an·eu·rysm n. [more]Microaneurysm - Community and Resources

a small swelling that forms on the side of tiny blood vessels. These small swellings may break and allow blood to leak into nearby tissue. People with diabetes may get microaneurysms in the retina of the eye.