 There is no intrarenal stone or obstruction bilaterally.  There is no hydronephrosis, ureteral dilatation.  There are calcifications about the pelvis including one in the left upper pelvis, but these are stable from the prior study and there is no upstream ureteral dilatation, the findings therefore are favored to represent phleboliths.  The bladder is nearly completely decompressed.  There is no asymmetric renal enlargement or perinephric stranding as secondary evidence of obstruction.