Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is stable mild cardiomegaly . The hilar and mediastinal contours are unremarkable . Median sternotomy wires appear to be intact . There is a left - sided IJ central venous line in appropriate position in a known left sided SVC . There is a right - sided pigtail catheter , which appears to be in unchanged position . There has been a slight interval increase in the small right pleural effusion . There is a stable small left pleural effusion . No evidence of a pneumothorax .
    OUTPUT:
    
Right - sided pigtail catheter appears to be in appropriate position , however there has been a slight interval increase in the small right pleural effusion .