Body systems

A cancer that starts in the cells lining the blood and lymph vessels.

An illness of young children in which the walls of medium-sized blood vessels throughout the body become inflamed.

A raised, firm overgrowth of scar tissue that spreads beyond the edges of the original wound.

A disease in which the cornea thins and bulges forward into a cone, blurring and distorting vision.

A form of permanent brain damage in which bilirubin is deposited in a newborn's brain tissue.

A state in which ketones build up in the blood and make it too acidic.

An acid made by the liver when the body burns fat for energy instead of glucose.

One of two bean-shaped organs in the back of the belly that filter the blood and make urine.

An infection of one or both kidneys; the medical word is pyelonephritis.

A hard, pebble-like lump of minerals that forms inside the kidney.

Pain felt in or around the knee joint.

A long-lasting brain disorder of memory that results from a severe lack of thiamine (vitamin B1).

A macrophage that lives in the blood channels of the liver and eats bacteria, worn-out blood cells and debris.

An outward curve of the upper spine that makes the back look rounded or hunched.