Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The tracheostomy tube is in standard position . An orogastric feeding tube is seen coursing below the diaphragm and out of view on this image . Small bilateral pleural effusions appear unchanged on the right and slightly decreased on the left compared to the prior study of ___ . Bibasilar opacities appear stable and likely reflect a combination of atelectasis and pleural effusion , greater on the right than the left . In the appropriate clinical context , superimposed infection can not be excluded . Pulmonary vascular congestion and asymmetric interstitial pulmonary edema greater on the right than the left is similar to the prior study . The cardiac silhouette is incompletely evaluated due to obscuration by pleural parenchymal abnormalities . The prominent mediastinum is unchanged in contour from ___ . Inferior subluxation of the right humeral head is incidentally noted .
    OUTPUT:
    
Improved aeration of left lung base . Otherwise , similar appearance of chest ___ ___ .