Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP upright and lateral views of the chest provided . Patient 's chin obscures the left lung apex . Scattered areas of atelectasis without convincing evidence of pneumonia . Hilar congestion is suspected without frank edema . No large effusion or pneumothorax . Cardiomediastinal silhouette appears unchanged allowing for slight differences in technique . No acute osseous abnormality .
    OUTPUT:
    
Hilar congestion without frank edema .