liver is enlarged to 173mm and demonstrates fatty infiltration the gallbladder, biliary tree, pancreas and spleen are unrembarkable. a 6 mm non-obstructing calculus is identified in the mid aspect of the right kidney the left kidney and aorta are unrembarkable - on another note the bladder is smoothly marginated - prevoid volume was 829 cc postvoid residual of 90 cc is above the upper oimits of normal which is 20 cc, however, this may be related to over-filling of the bladder on the prevo8id scan - can you decipher both for me - what happens if it was not overfilling