Idiopathic pulmonary fibrosisFrom our partner site on heart disease, MyHeartCentral.com. Idiopathic pulmonary fibrosis involves scarring or thickening of tissues deep in the lung without a known cause. Alternative Names: Idiopathic diffuse interstitial pulmonary fibrosis; IPF; Pulmonary fibrosis; Cryptogenic fibrosing alveolitis; CFA; Fibrosing alveolitis; Usual interstitial pneumonitis; UIP Causes, incidence, and risk factors: advertisement Idiopathic pulmonary fibrosis is a disease of the lower respiratory tract that damages the air sacs (alveoli) and leads to reduced transfer of oxygen to the blood. It causes widespread scarring of the lung. The condition is believed to result from an inflammatory response to an unknown agent -- "idiopathic" means no cause can be found. The disease occurs most often in people between 50 and 70 years old.
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