Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is interval development of a right apical pneumothorax , measuring approximately 1 .8 cm on maximum measurement . The right hemithorax remains relatively well aerated , but with diffuse alveolar opacities , similar in extent and degree to the prior examination . There appears to be slight increased volume loss in the left retrocardiac region , which may represent slight worsening atelectasis , although the possibility of a worsening alveolar process can not be excluded . The cardiac silhouette remains enlarged . Endotracheal tube remains in place , with the tip approximately 4 cm above the carina . Left - sided subclavian central venous catheter is again seen , with the tip at the junction of the brachiocephalic veins . Right - sided implanted catheter is present with the tip at the cavoatrial atrial junction . A feeding tube remains in place , NG type , extending beyond the inferior confines of this film .
    OUTPUT:
    
Interval development of right apical pneumothorax . This was called by telephone to Dr . ___ at 11 :55 a .m . , ___ , within five minutes after discovery of the finding .