Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A nasogastric tube terminates in the stomach . Associated with recent contrast administration is an asymmetric pyelogram with relatively little opacification in the left renal collecting system but persistent opacification of the right renal collecting system , which appears mildly dilated . There is a moderate pleural effusion on the right with associated opacity that could probably be attributed to associated compressive atelectasis , although not entirely specific . Patchy left basilar opacity is also noted . There is no free air .
    OUTPUT:
    
1 . Appropriate positioning of nasogastric tube . 2 . Moderate right - sided pleural effusion with associated parenchymal opacity in the right lower lobe , probably atelectasis , although not entirely specific . 3 . Persistent opacification of a mild to moderately dilated right renal collecting system , compared to the left . This appearance may relate to a prominent extrarenal pelvis or potentially a low - grade form of ureteropelvic junction obstruction could be considered .