Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: On the frontal view , lower lung volumes are noted on the current exam . There are persistent bilateral pleural effusions which based on the lateral have not significantly changed . There is a persistent 2 .5 cm rounded nodular opacity projecting over the left upper lung laterally as on prior . Aortic stent graft is identified . Median sternotomy wires are intact . No acute osseous abnormality .
    OUTPUT:
    
Persistent bilateral pleural effusions not significantly changed . Nodular opacity projecting over the left upper lung laterally .