Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A single portable AP upright view of the chest was obtained . There is a moderate - sized left pleural effusion and adjacent compressive atelectasis ; however , pneumonia is not excluded . Rounded opacity along the right hilus may represent a mass . There is pulmonary vascular engorgement without pulmonary edema . Severe dextroconvex thoracic scoliosis is noted . There is no left effusion or pneumothorax . Deformity of the left humerus likely reflects sequelae of an old injury .
    OUTPUT:
    
1 . Dense opacification at the left base likely represents a combination of a moderate pleural effusion and adjacent atelectasis ; however , infection is not excluded . 2 . Rounded opacity along the right hilus may represent a mass and contrast enhanced CT is recommended for further evaluation .