[Diagnostic usefulness of magnetic resonance cholangiopancreatography (MRCP) in comparison with retrograde cholangiopancreatography (ERCP) for cholelithiasis].
OBJECTIVE
To elucidate MRCP diagnostic usefulness compared to ERCP.


METHODS
29 MRCP performed patients diagnosed by ERCP were studied.


RESULTS
MRCP showed 92%, 67% sensitivity and 73%, 100% specificity in choledocholithiasis (CBD) and cholecystolithiasis (GB), respectively. MRCP revealed 4.0 false positive and 1.5 false negative in CBD and GB, respectively. MRCP could detect 22 stones out of 33 in CBD and 13 out of 42 in GB. As for the maximal diameter, MRCP depicted 31% for less than 5 mm and 100% for over 6 mm in CBD. In GB, 7% for less than 5 mm, 83% for 6-10 mm and 100% for over 11 mm.


CONCLUSIONS
Although the depection of tiny stone is limited, MRCP is a useful diagnostic tool for cholelithiasis, especially choledocholithiasis.
Ahn
T
T
Department of Internal Medicine, Nara Prefectural Gojo Hospital.
Matsumoto
M
M
Ueda
S
S
Fukui
H
H
D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002760:Cholangiopancreatography, Endoscopic Retrograde; D002769:Cholelithiasis / Q000175:diagnosis*; D003937:Diagnosis, Differential; D005260:Female; D042882:Gallstones / Q000175:diagnosis* / Q000473:pathology; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008297:Male; D008875:Middle Aged; D012680:Sensitivity and Specificity