Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Apparent widening of the mediastinum is continuous with thickened left apical pleural margin , obscuring the aortic knob . This may represent either widened mediastinum due to bleeding or extravasation or pleural fluid tracking superiorly in the supine patient . Of note a large vascular introducer has been removed from the left neck and upper mediastinum since ___ : 00 and could be a source of bleeding . . There is increased interstitial opacities and fullness of the pulmonary vasculature . New right ground - glass perihilar opacity could be edema or aspiration . There is left lower lobe collapse with leftward mediastinal shift and large left pleural effusion . Small pleural effusion on the right is also likely . The nasogastric tube is coiled in the hypopharynx and terminates in the upper stomach . Right - sided introducer , ETT and left - sided PICC appear unchanged in position .
    OUTPUT:
    
1 . Widened mediastinum which may represent vascular dissection or layering pleural fluid given supine film . Repeat exam with upright film which is read concurrently with a radiology resident is recommended . 2 . Left lower lobe collapse with large pleural effusion . 3 . Coiled nasogastric tube in the hypopharynx , terminating in upper stomach .