Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Following removal of a right - sided chest tube , a very small right apical lateral pneumothorax is unchanged in appearance . Slightly improved aeration in the right lower lobe is noted with decreased elevation and improved visualization of the right hemidiaphragm compared to the prior study . Opacities at the operative site have minimally improved as well . Widespread ground - glass and reticular opacities persist and may be related to the patient 's known diffuse interstitial lung disease process . Subcutaneous emphysema is again demonstrated in the right chest wall .
    OUTPUT:
    
Unchanged very small right apicolateral pneumothorax following chest tube removal .