Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Right hemodialysis catheter ends at cavoatrial junction . The end of right - sided PICC line is obscured by the hemodialysis catheter , but is ending somewhere in the superior vena cava . Mild pulmonary vascular congestion has improved since ___ with also decrease in size of the right hilum . Moderate cardiomegaly is stable . There is no pneumothorax or pleural effusion . Decrease in size of right paracardiac Morgagni hernia from chest x-ray of ___ to ___ is probably explained by decreased fluid in the hernia due to change from peritoneal dialysis to hemodyalisis .
    OUTPUT:
    
1 . Right hemodialysis catheter is in adequate position . Right - sided PICC line distal end is obscured by the hemodialysis catheter , but is presumed to be in the superior vena cava . 2 . Mild pulmonary congestion has improved .