Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP upright and lateral views of the chest provided . Areas of atelectasis in the lower lungs are noted without convincing evidence for pneumonia . No large effusion or pneumothorax is seen . The cardiomediastinal silhouette appears stable . Imaged bony structures are intact with a mild dextroscoliosis of the T - spine .
    OUTPUT:
    
Lower lung atelectasis without convincing signs of pneumonia .