Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP portable upright chest radiograph was provided . There is elevation of the right hemidiaphragm with right basal atelectasis as the likely cause . There is no convincing evidence of pneumonia . There is prominence of the right pulmonary hilum which could indicate pulmonary hypertension . No large effusion is seen . Heart size is stable . Bony structures are intact with old right rib deformities noted .
    OUTPUT:
    
Mild right basal atelectasis with slight elevation of the right hemidiaphragm . No convincing signs of pneumonia .