Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lower most left chest and left costophrenic angle are excluded from the film . The patient is imaged with his left arm raised . The lungs are moderately well inflated . The heart may be slightly enlarged , but the cardiomediastinal silhouette unchanged , with minimal unfolding of the aorta and aortic calcification noted . No CHF , focal infiltrate , right pleural effusion , or gross left pleural effusion is identified . No pneumothorax detected . Linear hyper density projecting over the lingula is not significantly changed dating back to ___ . Limited assessment of the upper abdomen shows residual contrast in the colon . Equivocal hyperlucency could be an artifact due to overlapping loops of bowel . No free air seen beneath the diaphragm .
    OUTPUT:
    
1 . No acute pulmonary process identified . In particular , no focal infiltrate to suggest pneumonia . 2 . Residual oral contrast noted in non-distended loops of colon . 3 . Relative hyperlucency in the left upper quadrant of the abdomen , with well delineated loops of bowel , is likely an artifact due to overlapping loops of bowel . However , it raises the question ___ ___'s sign ( free intraperitoneal air ) . If the the patient has abdominal symptoms , then dedicated abdominal radiographs or CT would be recommended to further assess for free intra-abdominal air . No free air seen beneath the diaphragm : What is labeled as an upright film ( though no actual fluid level seen to confirm this ) .