But when you have pain ... upper abdomen that may spread to the back, but may be felt higher up, under the left breast, says ...

In fact, chest pain on the left side under the breast is more common because the heart, stomach, colon, spleen, and pancreas are located in the upper left region of your body ... If you notice a rash ...

But when you have pain ... upper abdomen that may spread to the back, but may be felt higher up, under the left breast, says Dr. Ross. Pleurisy is an inflammation of the lining of the lungs and ...