Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable supine image of the chest is submitted . The lung bases and costophrenic angles are not entirely included on the study .
    OUTPUT:
    
Given these limitations , bibasilar patchy opacities may reflect atelectasis although pneumonia or aspiration should also be considered . No evidence of pulmonary edema . No large pneumothorax , although the sensitivity to detect pneumothorax is diminished given supine technique . A more focal nodular opacity at the right lung base most likely represents a nipple shadow and could be better assessed on followup imaging . There has been interval resolution of the mild interstitial edema seen on the previous study . A densely calcified opacity at the left apex appears to be either related to the second anterior rib or be pleural in location when correlated with the ___ film study from ___ at 00 : 52 . Correlation with more remote studies would be helpful .