Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral chest views have been obtained with patient in upright position . Analysis is performed in direct comparison with the next preceding portable AP chest examination of ___ . PA and lateral chest views were obtained with patient in upright position . Heart size and mediastinal structures are unchanged . As before , there is a diffuse density occupying the right - sided cardio - diaphragmatic angle in this patient status post recent right middle lobectomy . In addition , a round density with a diameter of about 2 - 3 cm is seen , similar as before . This density matches the previously identified ( chest CT of ___ ) density and the finding appears to be stable . There is no evidence of new pulmonary parenchymal abnormalities , and the pleural spaces and the lateral and posterior pleural sinuses remain free . The previously identified minimal apical pneumothorax on the right side can not be identified anymore .
    OUTPUT:
    
Stable chest findings . No new acute abnormalities . Previously described densities and status post right middle lobectomy unchanged .