Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single portable view of the chest . No prior . Right IJ line is identified with tip in the proximal right atrium . There is no visualized right apical pneumothorax . No definite left pneumothorax . There is , however , horizontal line at the left lung base suggesting air-fluid level , raising possibility of hydropneumothorax . Alternatively , this could be due to relatively flat diaphragm and effusion . Mild blunting seen at the right cardiophrenic angle as well . Cardiomediastinal silhouette is within normal limits . Atherosclerotic calcifications noted at the aortic arch . Mitral annular calcification is also noted .
    OUTPUT:
    
Right IJ central line in the proximal right atrium . Possible air fluid level at the left lung base , raising possibility of hydropneumothorax versus pleural effusion and flattened hemidiaphragm . Two - view chest x-ray suggested to further characterize .