Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest were obtained . No focal consolidation or evidence of pneumothorax is seen . Trace pleural effusion may be present . There is a small rounded 4 - 5 mm calcific density projecting over the anterior right first rib which may represent a bone island or alternatively underlying calcified granuloma . The aorta is slightly tortuous . The cardiac silhouette is not enlarged . Retrocardiac density with air within seen on the frontal and lateral views is most consistent with a hiatal hernia .
    OUTPUT:
    
No acute cardiopulmonary process . Possible trace pleural effusion . Otherwise , no acute cardiopulmonary process . Likely hiatal hernia .