Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Tracheostomy tube remains in place . Enteric tube is no longer visualized . Lung volumes are low . Asymmetric right upper lung parenchymal opacity has waxed and waned over multiple prior exams . Streaky left basilar opacity is likely atelectasis . The cardiomediastinal silhouette is stable . Chronic deformity of the proximal left humerus is again noted , likely from prior fracture .
    OUTPUT:
    
Right upper lung parenchymal opacity which has been present on prior and could represent infection or atelectasis .