Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single frontal upright chest radiograph demonstrates heterogeneous opacity within the right middle lobe with elevation of the right hemidiaphram consistent with right middle lobe atelectasis with crowding of vasculature . No additional focal opacities . The left lung is clear . No pleural effusion . Bilateral right greater than left hyperdense line along bilateral apices are consistent with bilateral pleural thickening . No pneumothorax . Heart size is top - normal . Mediastinal contour and hila are unremarkable .
    OUTPUT:
    
Right middle lobe atelectasis with crowding of vasculature , this may present early developing pneumonia in the appropriate clinical setting .