A Baker cyst (popliteal cyst) is a fluid-filled sac that forms behind the knee. Here are possible treatments and complications.

Cardioversion is a procedure that is done to return your heartbeat to a normal rhythm. You take medicine, either through an IV or by mouth.

Aspiration is when something enters the airway or lungs by accident. It may be food, liquid, or some other material. This can cause serious health problems, such as pneumonia. Aspiration can happen when a person has dysphagia. It can also happen if a child has gastroesophageal reflux disease.

A subdural hematoma is a buildup of blood on the surface of the brain. The blood builds up in a space between the layers that surround your brain.

Aspiration is when something enters your airway or lungs by accident. It may be food, liquid, or some other material. This can cause serious health problems, such as pneumonia. Aspiration can happen when you have trouble swallowing normally, a condition called dysphagia.

A fusion is a surgery to join two or more bones together. During a transforaminal lumbar interbody fusion (TLIF), this is done on the spine. Two of the bones of your back (vertebrae) are joined together, and one of your spinal disks is removed.

Aortic valve regurgitation is when the aortic valve leaks. In many cases, mild to moderate aortic valve regurgitation just needs to be monitored. More severe cases often need surgery. Here's what you need to know about treatment.

Hard nodules can sometimes form inside the thyroid gland. You may notice a small bump in the gland area. Thyroid nodules are common. The nodules are often not dangerous. But in some cases, they can be thyroid cancer. A thyroid FNA biopsy can test for cancer.

Aniridia means lack of an iris. It is a rare disorder in which the iris of the eye is partly or completely missing. Here are details on treatments and complications.

Here are images to help you understand how to put on thigh-high compression stockings.