Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . There is partial collapse of the right lower and right middle lobe with a moderate hydrothorax on the right . Hilar contours are normal . Mild , rightward shift of mediastinal structures .
    OUTPUT:
    
Moderate right hydrothorax with associated partial collapse of the right lower and right middle lobe .