Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Upright AP radiograph of the chest . There are dense bilateral perihilar and right lower lung opacities along with more diffuse nodular opacities , more constraint in the upper lungs bilaterally . The left lung base is relatively spared . Increased lucency at the right lung base is suspicious for pneumothorax . There is no pleural effusion . The stomach is distended . No displaced fracture is identified . The heart size is normal .
    OUTPUT:
    
1 . The opacities described above likely represent pneumonitis secondary to aspiration , however , the more widespread distribution suggests a concurrent process such as pulmonary edema . 2 . Lucency above the right hemidiaphragm is suspicious for pneumothorax ( however this was not seen on subsequent chest CT . 3 . No fracture is identified .