Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: No overt pulmonary edema is seen . No large pleural effusion or pneumothorax is seen . The aorta is somewhat tortuous . The cardiac silhouette is not enlarged . Subtle nodular opacity projecting over the anterior right sixth rib may be artifactual but underlying pulmonary nodule not excluded . Recommend shallow oblique radiographs for further assessment .
    OUTPUT:
    
Subtle nodular opacity projecting over the anterior right sixth rib , underlying pulmonary nodule not excluded . Recommend shallow oblique radiographs for further assessment . No pulmonary edema .