Sarcoidosis
Background
Sarcoidosis is a multisystem disorder of unknown cause which can affect any organ of the body taking the form of cells which cluster together in tiny nodules, or sarcoid granulomas. The word sarcoid comes from the Greek meaning "flesh like".
Sarcoidosis can develop in almost any organ. Most commonly it attacks the lungs, eyes, skin, more rarely the brain and nervous system. It can also spread to other organs such as the liver, heart and kidneys. The disease can range from a mild, self-limiting condition which needs no treatment, to a severe, chronically progressive illness.