Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . Midline sternotomy wires and mediastinal clips are again noted . The lungs are clear without focal consolidation , large effusion or pneumothorax . There is a retrocardiac opacity containing gas most compatible with hiatal hernia . No large effusion or pneumothorax is seen . Cardiomediastinal silhouette appears normal . Bony structures notable for an acute left humeral neck fracture and dextroscoliosis of the T - spine .
    OUTPUT:
    
Left humeral neck fracture better assessed on dedicated left shoulder radiographs . Hiatal hernia . No acute intrathoracic process .