DIFFERENTIAL DIAGNOSIS OF PULMONARY CAUSES OF CENTRAL CYANOSIS

​Differential diagnosis of pulmonary causes of central cyanosis are : 
-asthma 
-pulmonary fibrosis 
-chronic bronchitis 
-pneumonia 
-tuberculosis 
-atelectasis 
-bronchiectasis 
-emphysema 
-pulmonary edema 
-pulmonary embolism 
-lung carcinoma 
-sclerosis of pulmonary artery 
-pulmonary hypertension 
-valvular pneumothorax
-pleural effusion 
-shock Lung 
-foreign body aspiration 
-cystic lung disease
-fibrosing alveolitis 
-mediastinitis 
-pneumoconiosis 
-Pickwickian syndrome 
-intrapulmonary arteriovenous aneurysm