Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single portable semi-upright frontal chest radiograph demonstrates hypoinflated lungs with a small sized right pneumothorax , which has increased from CT performed earlier that day . No flattening of the hemidiaphragm . The heart is mildly shifted leftwards . No left pneumothorax . Bibasilar atelectasis is noted . Scattered bilateral heterogeneous opacities most prominent within the lung apices likely represents contusions or mild pulmonary fibrosis as seen on CT chest . Mild cardiomegaly noted . Mediastinal contour and hila are otherwise unremarkable . No pleural effusion . Limited assessment of the osseous structures are notable for a minimally displaced right C6 and nondisplaced C7 rib fractures . Degenerative changes throughout the thoracolumbar spine . Visualized upper abdomen is within normal limits .
    OUTPUT:
    
1 . Interval increase of a small right pneumothorax . Heart is slightly shifted towards the left . No flattening of the diaphragm . Clinical correlation is recommended to assess for signs of tension . 2 . Bibasilar atelectasis as well as pulmonary contusions or mild pulmonary fibrosis , best seen on CT performed ___ . Close interval followup is recommended . 3 . Minimally displaced right C6 and nondisplaced C7 rib fractures .