Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable AP upright chest radiograph was provided . Lung volumes are markedly low and patient is rotated , which limits evaluation significantly . No convincing signs of pneumonia on this markedly limited exam . Cardiomediastinal silhouette is impossible to assess . No large pneumothorax or effusion . Deformity of the right humeral head appears chronic .
    OUTPUT:
    
Markedly limited exam without convincing signs of pneumonia . Would recommend repeat exam if there is further clinical concern .