The pericardium holds the heart in place and helps it work properly. There is a small amount of fluid between the inner and outer layers of the pericardium. This fluid keeps the layers from rubbing as the heart moves to pump blood.
Over a month ago I noticed that my breast was really sore on the left side toward my armpit. I didn't think much of it first as I have lupus so I seem to always have aches and pains. But one day I was feeling it and I noticed that there seemed to be a lot more "tissue" in that area if that makes sense?
However, most cases of chest pain under the left breast and rib cage area are caused by benign or easily treatable conditions. You may think: chest pain under my left breast? Time to call the ER! However, if you have pain under your left rib cage, it's unlikely, though possible, that you are experiencing a cardiac emergency.
Costochondritis kos-tuh-kon-DRY-tis is a painful swelling of the cartilage that attaches the ribs to the breastbone sternum. It's one of the most common causes of chest pain in kids and teens, and happens more often in girls than boys. Costochondritis — also called chest wall pain or costosternal syndrome — can cause a sharp, stabbing pain.
The heart on the right shows a heart with pericarditis, in which the membrane pericardium that surrounds the heart is swollen and infected. The heart on the left shows a heart with a normal pericardium. Pericarditis is swelling and irritation of the pericardium, the thin saclike membrane surrounding your heart.
The left side of the body houses a number of vital organs. Under and around the left breastbone are the heart, spleen, stomach, pancreas, and large intestine. When you experience pain under the left breast, it can have a variety of causes — some simple, some serious.
Your rib cage consists of 24 ribs — 12 on the right and 12 on the left side of your body. Their function is to protect the organs that lie beneath them. On the left side, this includes your heart, left lung, pancreas, spleen, stomach, and left kidney. When any of these organs are infected, inflamed, or injured, pain can radiate under and around the left rib cage.
Do you experience a sharp pain under your ribs? Does it make you think you are having a heart attack? Does this pain tend to worsen when you try and take deep breaths?
Although chest pain is often—and rightfully— associated with heart disease, other medical problems can be causes of chest pain. Angina—feelings of pressure, heaviness, tightness. You can learn more about angina in the Harvard Special Health Report Diseases of the Heart: A compendium of common heart condition and the latest treatments. Yet the heart isn't the only organ in the upper abdomen, and chest pain may be due to conditions affecting the esophagus, lungs, gall bladder, or stomach.