Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Left lung lavage was recently done , explaining probably the increased density of left middle lung . There is a small left pneumothorax measuring 3 to 6 mm . Mild pulmonary edema is new . Pleural effusions are small , if any . Minor fissure on the right side is slightly thickened with an atelectatic band in right lower lung . Mediastinal and cardiac contours are moderately enlarged . Aortic knob calcification is unchanged . Patient had prior sternotomy for aortic valve , mitral valve and tricuspid valve repair .
    OUTPUT:
    
1 . Left middle lung increased density is probably related to recent lavage . 2 . Left apical pneumothorax is small . 3 . Pulmonary edema is also mild . This has been discussed with ___ ___ .