<prompt> End stage Lung disease seen in -SarcoidosisInterstitial lung diseaseLangerhans cell histiocytosisAll  <response>: Ans. is a i.e., Sarcoidosis; b i.e., Interstitia lung disease; c i.e., Langerhans cell histiocytosis End-stage lung disease o When the lung can no longer keep the blood supplied with oxygen it is referred to as end-stage lung disease. o Causes of end stage lung disease - ARDS Pulmonary circulatory diseases Tuberculosis Cystic fibrosis Pneumoconiosis Asbestosis and others COPD emphysema, chronic bronchitis Interstitial lung diseases e.g. sarcoidosis o Pulmonary Langerhans cell histiocytosis is a progressive disease, and leads to endstage lung disease. 