Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: In comparison to the chest radiograph obtained 2 days prior , there is decreased bibasilar atelectasis , improvement in the mid left lung opacity , which likely also represents a focus of atelectasis , decreased pulmonary vascular congestion , and near resolution of small , bilateral pleural effusions . Moderate cardiomegaly is unchanged . Severe calcification of the aortic knob is unchanged . An enteric tube passes below the diaphragm , into the stomach , and outside the field of view .
    OUTPUT:
    
Improved atelectasis . No radiographic evidence of pneumonia or pulmonary edema .