Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Patient is rotated to the left . Left perihilar opacities may relate to aspiration or asymmetric edema , however , underlying infectious process could be present . No large pleural effusion is seen although trace left pleural effusion is difficult to exclude . Lung volumes are low . The cardiac silhouette is top - normal to mildly enlarged . The aorta is calcified .
    OUTPUT:
    
Patient rotated to the left and low lung volumes . Left mid to lower lung opacity may relate to aspiration or asymmetric pulmonary edema , but infection is not excluded in the appropriate clinical setting .