what is the part below your chest called
What organs is on left side under breast - What organs are on the left side under your breast? Chestwall, lung, heart. Immediately under your breast is the chest wall (muscles and rib cage). Below the chest wall on the left side, you have the lungs and heart and great blood vessels sucha s part of the aorta. What organs is on left side under breast - What organs are on the left side under your breast?