Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is again mildly enlarged . The mediastinal and hilar contours appear unchanged . Streaky opacities in the medial lower lung suggests minor atelectasis . Although the posterior costophrenic sulci are partly excluded , a meniscoid appearance to the posterior right lower hemithorax suggests a very small pleural effusion or thickening , but appears unchanged . Slight nodular thickening along the minor fissure is also unchanged . The osseous structures are unremarkable .
    OUTPUT:
    
Slightly blunting of the posterior right costophrenic sulcus , possibly a trace effusion or thickening , but no evidence of acute disease .