Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP single view of the chest has been obtained with patient in sitting semi-upright position . Analysis is performed in direct comparison with the next preceding AP and lateral chest view examination of ___ . Paying attention to differences in patient 's position , the heart size has not changed significantly , thus no signs of gross cardiomegaly or pulmonary vascular congestion can be identified . In comparison with the previous chest examination , the left - sided hemidiaphragm is more elevated than it was before and this coincides with diffuse haziness in the left lung base with partial obliteration of the diaphragmatic contour . As the lateral pleural sinus remains free , a finding suggests the possibility of a left lower lobe atelectasis . Possibility that this includes some pneumonic infiltrates can not be excluded . Review is performed of the next previous multiple chest examinations . On the study of ___ ( five days ago ) , the pulmonary vasculature shows more perivascular haze on the bases , a finding which has normalized on today 's examination . Thus , CHF related to fluid overload was more likely to be present at that time . Noteworthy is the development of left diaphragmatic elevation and diffuse density in the left lower lobe suggestive of atelectasis . Possibility of infiltrates in this area can not be excluded , similar as mentioned on a previous episode identified on chest examination of ___ . Similar as seen on previous examination , rather prominent gas distention of colon and small bowel is noted . There is no evidence of free subdiaphragmatic air .
    OUTPUT:
    
No evidence of CHF related to possible fluid overload , left lower lobe atelectasis in which inflammatory changes can not be excluded . Recommend followup examinations .