Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Patient is status post a right pneumonectomy with chronic pleural calcifications . The heart border can not be accurately assessed due to obliteration of the right heart border . There is persistent blunting of the left costophrenic angle which correlates to mediastinal fat on prior CT . Persistent atelectatic changes present in the left lung base . Multiple left - sided nodules are below the resolution of chest radiography and are better evaluated on CT . Endotracheal tube is in appropriate position . There is no large pleural effusion or pneumothorax .
    OUTPUT:
    
Appropriate positioning of the endotracheal tube . Left basal atelectasis .