Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP single view of the chest has been obtained with patient in semi-upright position . Comparison is made with the next preceding similar portable chest examination obtained six hours earlier during the same day . Previously identified left - sided pigtail end drainage catheter remains in unchanged position . There remains a 2 cm wide apical pneumothorax in the left hemithorax and appears unchanged during the latest six hours examination interval . Obliteration of left - sided diaphragmatic contours post = op pleural effusion appears unchanged in magnitude . No evidence of new pulmonary parenchymal abnormalities . Previously identified multiple mildly dislocated rib fractures in the left hemithorax appear unchanged as can be identified on this single view examination . In comparison with the next preceding portable chest examination obtained earlier today , there may be a slight increase of the basal densities , possibly caused by pleural effusion that mostly layers in the posterior compartment of the pleural space . More precise evaluation could be accomplished by a lateral view .
    OUTPUT:
    
Grossly stable findings with small - sized left apical pneumothorax . Probably increasing pleural effusions .