Mordue, RNC, MSN, NNP, Department of Advanced Practice Nursing, Loma Linda University Children's Hospital, Loma Linda, CA Two-dimensional echocardiogram showing the anomalous right pulmonary vein ...

The catch: We don't need too much cholesterol. Atherosclerosis, also known as narrowing of the arteries, happens when cholesterol builds up and blocks blood flow. This buildup is called plaque ...