In-depth

Causes

Sleep apnea

Sleep apnea causes people to repeatedly stop breathing during their sleep. Common signs of this sleep disorder include loud snores punctuated by periods of silence.

Risk factors

Cardiomyopathy

Cardiomyopathy is a heart muscle disease. Treatment options depend on what type of cardiomyopathy you have.

High blood pressure (hypertension)

Uncontrolled high blood pressure can lead to various life-threatening conditions. But it's easily detected — and you can work with your doctor to control it.

Symptoms

Enlarged spleen

An enlarged spleen is usually a sign of an underlying problem. Treatment varies, depending on what's causing the enlargement.

Tests and diagnosis

Amniocentesis

Amniocentesis — Overview covers definition, risks, results of this prenatal test.

Chest X-rays

Even with today's high-tech medical devices, the basic chest X-ray remains an important tool in diagnosing various conditions. Here's a look at how it works.

Chorionic villus sampling

Chorionic villus sampling — Overview covers definition, risks, results of this early prenatal test.

Treatments and drugs

Stem cell transplant

Stem cell transplants can bring certain cancers and other diseases under control, or even cure them. Find out what's involved in this complex procedure.

Dec. 13, 2012