Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A tracheostomy tube appears well positioned ending approximately 5 .5 cm from the carina . A left PICC ends in the mid SVC . Heart is enlarged . There is a background of mild vascular congestion . The right lung is otherwise clear . There is a small to moderate left pleural effusion with a retrocardiac opacity . There is no acute osseous abnormality .
    OUTPUT:
    
1 . Monitoring and support devices well positioned . 2 . Small to moderate left pleural effusion and retrocardiac opacity concerning for pneumonia in the correct clinical setting . 3 . Background of mild interstitial edema .