Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP and lateral views of the chest are compared to previous exam from ___ . Increased interstitial markings are seen throughout the lungs bilaterally . There is a large retrocardiac opacity which is partially aerated compatible with large hiatal hernia , similar to previous exam . There is no definite pleural effusion or confluent consolidation . The cardiac silhouette is essentially stable , noting lower lung volumes on the current exam . There is apparent inferior subluxation of the left humeral head with respect to the glenoid . Possible cortical stepoff is seen in the medial aspect of the humerus .
    OUTPUT:
    
1 . Diffusely increased interstitial markings in the lungs . This could be due to pulmonary vascular congestion in the setting of failure ; however , diffuse process such as atypical infection is also possible . Clinical correlation is suggested . 2 . Apparent inferior subluxation of the humeral head with respect to the glenoid . Possible cortical disruption / fracture of the medial aspect of the proximal humerus for which dedicated exam is suggested .