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DIC is caused by another medical condition that makes the body’s normal blood clotting process become overactive. The condition progresses through two stages. In the early stages, overactive clotting leads to blood clots throughout the blood vessels. The clots can reduce or block blood flow, damaging organs.

Pleural disorders may be caused by inflammation, injury, or an imbalance of fluids in the pleural space.

Vasculitis occurs when your immune system injures your blood vessels by mistake. What causes this to happen is not fully known, but when it occurs, your blood vessels become inflamed and can narrow or close off. Rarely, the blood vessel wall may weaken, causing it to expand or bulge. This bulge is known as an aneurysm.

Cardiomyopathy refers to diseases of the heart muscle in which the heart muscle becomes enlarged, thick, or rigid. As cardiomyopathy worsens, the heart becomes weaker.

Bone marrow tests check whether your bone marrow is healthy and making normal amounts of blood cells. The two bone marrow tests are aspiration and biopsy

Bronchoscopy is a procedure that looks inside the lung airways. It involves inserting a bronchoscope tube, with its light and small camera, through your nose or mouth, down your throat into your trachea, or windpipe, and to the bronchi and bronchioles of your lungs.

Cardioversion is a procedure that uses external electric shocks to restore a normal heart rhythm.

A coronary calcium scan is a CT scan of your heart that detects and measures the amount of calcium in the walls of your coronary arteries.

Palpitations are feelings that your heart is skipping a beat, fluttering, pounding, or beating too hard or too fast. You may feel palpitations in your chest, throat, or neck during activity or when you are sitting still or lying down.

Atelectasis is a condition in which the airways and air sacs in the lung collapse or do not expand properly.