Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Patient is status post right upper lobectomy with redemonstration of associated volume loss and rightward mediastinal shift , slightly more prominent compared to prior exam due to additional volume loss from interval improvement of a right apical loculated effusion , now small in size . Heart size is normal . Hilar contours are unremarkable . The lungs are otherwise clear without focal consolidations . There is no pneumothorax . Anterior cervical fixation hardware is again noted .
    OUTPUT:
    
Changes from right upper lobectomy with associated volume loss and rightward mediastinal shift with interval improvement of a loculated right apical pleural effusion and resolution of right lung field opacities . These findings neither suggest nor exclude pulmonary embolus .