Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A large - bore central catheter terminates in the expected location of the right atrium , unchanged from prior . The lungs are clear . There is no focal consolidation or pneumothorax . There is no vascular congestion or pleural effusions . Mediastinal and hilar contours are within normal limits . The cardiac silhouette is mildly enlarged though unchanged . Mild indentation of the left trachea at the level of the clavicles is unchanged compared to prior chest CT from ___ and likely reflects an underlying tracheal deformity as no compressive mass lesion is evident on the prior CT .
    OUTPUT:
    
1 . No acute cardiopulmonary process . 2 . Stable mild cardiomegaly . 3 . Unchanged proximal tracheal deformity suggestive of underlying tracheomalacia .