Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral images of the chest . The patient is status post right pneumonectomy , unchanged in appearance from prior exam . The left lung is well expanded and clear . Of note , the left costophrenic sulcus is not imaged on this exam , but there is no visualized left pleural effusion . There is no spare the cardiomediastinal silhouette obscured by the collapsed
    OUTPUT:
    
No acute cardiopulmonary process is visualized ; however , given the persistence of symptoms and abscence of findings on serial conventional radiographs , CT may be helpful for further evaluation of the postoperative chest .