Most common cause of idiopathic interstitial pneumonia is
Idiopathic pulmonary fibrosis is the most common form of idiopathic interstitial pneumonia.It is characterised by exeional dyspnea,non productive cough,inspiratory crackles with or without digital clubbing.HRCT show patchy,predominantly basilar,subpleural reticular opacities,traction bronchiectasis and honeycombing.Pulmonary function tests often reveal a restrictive pattern. Reference:Harrison' s medicine-18th edition,page no:2165.
Sarcoidosis
Organizing pneumonia
Idiopathic pulmonary fibrosis
Lipoid pneumonia
Respiratory system