Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Patient is status post aortic graft placement with unchanged left subclavian line . Right - sided pigtail catheter is partially imaged . A small right pleural effusion persists , possibly slightly increased , however this may relate to differences in patient position . There may be mild central pulmonary vascular congestion .
    OUTPUT:
    
Mild pulmonary vascular congestion . Small right pleural effusion , possibly increased , however this may relate in part to differences in patient position .