Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac , mediastinal and hilar contours are normal . Mild leftward deviation of the trachea at the level of the thoracic inlet with prominence of the right superior mediastinal contour may reflect a thyroid goiter , not substantially changed from prior . Lungs are hyperinflated but clear without focal consolidation . No pulmonary vascular congestion or pneumothorax is present . Blunting of the left costophrenic angle on the lateral view is compatible with a small pleural effusion . No acute osseous abnormalities detected .
    OUTPUT:
    
1 . Small left pleural effusion . 2 . Leftward deviation of the trachea with prominence of the right superior mediastinal contour could be due to a thyroid goiter , but not grossly changed in the interval . Clinical correlation is recommended .