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Diffuse Pulmonary Vascular Dilatation in a Patient With Liver Cirrhosis

Diffuse pulmonary vascular dilatation is an uncommon cause of hypoxemia due to a severe right-to-left shunt. This may possibly happen in a patient with liver cirrhosis when hepatopulmonary syndrome occurs. 1 In particular, the orthodeoxia might be obscured by the critical status caused by liver cirrhosis-related complications such as variceal bleeding and hepatoencephalopathy Therefore, chest radiography and transthoracic lung sonography may be helpful in the initial approach.