Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable AP upright image of the chest . The trachea is noted to be deviated to the right . The lungs are well expanded . Opacity at the medial right lung base , which represent atelectasis but can not exclude pneumonia or aspiration in the right clinical setting . Mild atelectasis is seen in the left lung base . There is no pleural effusion or pneumothorax . The cardiomediastinal silhouette is chronically enlarged .
    OUTPUT:
    
1 . Opacity in the medial right lung base , which may represent atelectasis but can not exclude pneumonia or aspiration in the right clinical setting . 2 . Trachea is noted to be deviated to the right . Recommend corrleation with physical exam for mass in the neck .