Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest are provided . The left lung is clear . Subtle opacity is seen within the right lower lung which could represent loculated fissural fluid given its appearance on the lateral projection . Otherwise , the lungs appear clear . Cardiomediastinal silhouette appears normal . Calcified mediastinal lymph nodes are noted . Bony structures are intact . Air-filled loops of large bowel seen beneath the right hemidiaphragm .
    OUTPUT:
    
Fissural fluid , likely accounts for subtle opacity at the right lung base . Otherwise , unremarkable .