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A pulmonary embolism is a blood clot that can block blood flow to the lungs. This is a medical emergency. Read on to learn more about this condition including diagnosis, treatment, and long-term concerns.

Celiac disease is an autoimmune disease. You can manage the disease by removing gluten from your diet. This relieves your symptoms.

Urethritis occurs when the urethra is inflamed. The urethra is the tube that runs from the bladder through the penis. Learn about symptoms, causes, diagnosis, and treatment for this condition.

Your doctor has told you that you have overactive bladder syndrome (OAB). Why OAB occurs is not known. But treatments are available to help control the bladder muscle and manage OAB. Read on to learn more.

Costochondritis is inflammation of a rib or the cartilage that connects a rib to your breastbone (sternum). Read on to learn more about the condition and how it can be treated.

A contrast echocardiogram helps your health care provider see how your heart is working. It uses ultrasound and a contrast fluid to help highlight the structures in the heart.

A low-fiber diet means eating foods that don't have much fiber. They are easy to digest. Learn why your doctor may put you on this kind of diet-and what foods you can and can't eat.

A CT colonography is used to view the inside of your lower digestive tract (colon and rectum). It can help screen for colon cancer and for polyps. This test is sometimes called virtual colonoscopy.

Your lungs are each surrounded by two layers of membrane. The space between the layers is called the pleural space. Excess fluid, blood, pus, or air in the pleural space makes it hard for the lung to expand and makes breathing difficult. A chest tube is a soft, flexible tube put into the pleural space that drains blood, air, or excess fluid.