Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable AP upright chest radiograph obtained . In this patient with known small cell lung cancer , there is stable soft tissue density / prominence of the right pulmonary hilum which is unchanged from prior exams . There is a small right pleural effusion which appears stable from prior exam and is somewhat loculated , tracking along the right lung apex . There is no overt evidence of pneumonia . There are subtle nodular opacities within the periphery of both lungs which are of unknown etiology or significance . Overall heart size appears stable . Bony structures are intact .
    OUTPUT:
    
Stable right hilar prominence and right pleural effusion . Subtle nodular opacities in the periphery of the lungs are indeterminant . Nonemergent CT may be performed to further assess .