Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Two supine portable views of the chest . Endotracheal tube tip is approximately 5 cm from the carina . Enteric tube passes below the field of view , side port past the GE junction . On one view , there are low lung volumes with crowding of the bronchovascular markings with improvement on the second acquisition . There is mild cardiomegaly potentially accentuated due to supine technique . Prominence of the upper mediastinum does improve between the two views and is thought to be in part due to portable technique . Calcification projecting over the right lung apex may be a calcified granuloma . There is no confluent consolidation . Hyperdensity of the renal shadows seen bilaterally presumed from recent intravenous contrast administration can be seen in the setting of acute tubular necrosis if no recent CT scan has been performed .
    OUTPUT:
    
1 . Endotracheal and enteric tubes in place . 2 . Hyperdensity of the renal shadows bilaterally . Assuming no recent CT scan has been performed in the past few hours , this persistent hyperdensity can be seen in the setting of acute tubular necrosis and correlation with serial creatinines is suggested .