Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is intubated . The endotracheal tube terminates at the thoracic inlet approximately 7 cm above the carina . Advancing the tube by approximately 3 cm could be considered for more optimal positioning . The heart is moderate to severely enlarged with a globular configuration . Perihilar fullness suggests mild vascular congestion but otherwise the lungs appear clear . Although the left costophrenic sulcus is not entirely included , there is no definite pleural effusion . There is no pneumothorax .
    OUTPUT:
    
1 . Striking cardiomegaly ; true cardiac enlargement or the possibility of a pericardial effusion , or perhaps both , could be considered . 2 . Prominent main pulmonary artery contour . 3 . Findings suggesting mild vascular congestion . 4 . Status post endotracheal intubation , with relatively high lying endotracheal tube , which could be advanced by approximately 3 cm for more optimal positioning , if clinically indicated .