Diagnostic dilemmas in biliary strictures mimicking cholangiocarcinoma.
OBJECTIVE
Bile duct strictures may be malignant or benign. In the absence of previous biliary surgery a precise preoperative diagnosis is often difficult, in particular when a tumor mass is absent in the preoperative radiologic findings.


METHODS
A review of 179 patients observed between 1982 and 2001 by the same surgical team with a preoperative diagnosis of malignant stricture of the biliary tree. A surgical procedure was performed in 153 of these cases.


RESULTS
The presence of a malignant stricture was confirmed by final pathologic examination in 32 of 38 cases (96%) in which a curative resection was performed. A final diagnosis of inflammatory stricture secondary to choledocholithiasis was made in 3 of the remaining 6 cases (4%), along with one case each of sclerosing cholangitis, granular cell tumor and Mirizzi's syndrome, respectively.


CONCLUSIONS
Precise preoperative evaluation of biliary structures can be very difficult when a tumor mass is absent. Despite the use of invasive procedures and new techniques such as magnetic resonance cholangiopancreatography, a false-positive rate of 4% may be expected. However, whenever a malignancy is not definitely excluded, biliary strictures should be treated as a cholangiocarcinoma.
Department of Surgery and Transplantation, University of Bologna, Italy. aprincipe@orsola-malpighi.med.unibo.it
A
A
Principe
G
G
Ercolani
F
F
Bassi
U
U
Paolucci
A
A
Raspadori
P
P
Turi
P
P
Beltempo
G L
GL
Grazi
A
A
Cavallari
D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001650:Bile Duct Neoplasms / Q000175:diagnosis*; D001652:Bile Ducts / Q000473:pathology*; D001653:Bile Ducts, Intrahepatic; D018281:Cholangiocarcinoma / Q000175:diagnosis*; D002758:Cholangiography / Q000379:methods; D003251:Constriction, Pathologic; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged