Sarcoidosis

n. chronic disease characterized by tumorous nodules on various parts of the body (Medicine)

Sarcoidosis, also called sarcoid (from the Greek 'sark' and 'oid' meaning "flesh-like") or Besnier-Boeck disease, is an immune system disorder characterised by non-caseating granulomas (small inflammatory nodules) that most commonly arises in young adults. The cause of the disease is still unknown. Virtually any organ can be affected; however, granulomas most often appear in the lungs  or the lymph nodes . Symptoms can occasionally appear suddenly but usually appear gradually. The clinical course varies and ranges from asymptomatic disease that resolves spontaneously to a debilitating chronic condition that may lead to death.
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Sarcoidosis is a disease which can affect many organs within the body. It causes the development of granulomas. [more]Sarcoidosis - Community and Resources

Noun
1. a chronic disease of unknown cause marked by the formation of nodules in the lungs and liver and lymph glands and salivary glands
(hypernym) pathology

An inflammatory disease marked by the formation of granulomas (small nodules of immune cells) in the lungs, lymph nodes, and other organs. Sarcoidosis may be acute and go away by itself, or it may be chronic and progressive. Also called sarcoid.