Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Borderline cardiomegaly is again noted . Opacification at the left lung base consistent with pleural effusion and adjacent compressive atelectasis appears improved since most recent prior examination of ___ . Underlying infectious process can not be completely excluded in the correct clinical setting . Minimal opacification in right lung base may represent atelectasis . The right PICC tip projects over the expected region of the mid SVC . The tracheostomy tube appears slightly angulated with respect to the trachea and needs to be repositioned .
    OUTPUT:
    
1 . Tracheostomy tube is malaligned with respect to the trachea , position needs to be reevaluated . Findings were discussed with Dr . ___ at 14 :21 on ___ via telephone . 2 . Retrocardiac opacification may represent pleural effusion with adjacent compressive atelectasis ; however , underlying infection can not be completely excluded in the correct clinical setting . These findings are improved since most recent prior examination .