Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are well - expanded , with no evidence of pleural effusion , pulmonary edema , pneumothorax , or focal consolidation . The cardiomediastinal silhouette is stable . On the frontal projection , just above the posterior right sixth rib , there is a linear opacity extending laterally , possibly a vessel , with a 4 mm nodular density just superior to the rib , not seen on the lateral view .
    OUTPUT:
    
No acute cardiopulmonary process . Possible right pulmonary nodule seen on the frontal view only may be artifactual . Non urgent shallow oblique radiographs are recommended to resolve this finding .