Definition: In orthopedic terminology, "parasternal" refers to a condition where the left side of the chest is significantly larger than the right side. This can occur when there are structural abnormalities in the heart or lungs, leading to an imbalance in blood flow and oxygenation. Parasternal conditions can affect various aspects of the cardiovascular system, including heart function, blood pressure, and circulation. Understanding parasternal anatomy plays a crucial role in diagnosing and treating such conditions.