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Before the laparoscopic era, detection of CBD stones in patients
with lithiais of the gallbladder has been made, preferably, by
intraoperative cholangiography. Development of laparoscopy
gives the necessity of a preoperative detection of CBD stones,
expecially when a previous endoscopic treatment is preferred.
Tenon’s multifactorial score, in the Author’s opinion, is able
to detect patients “at risk” for CBD stones. This score includes
the following parameters: age, CBD diameter, size of gallstones,
colic pain and cholecystitis.
The chance of CBD stones was 2 % for a score lower than
3,5 and 81 % for a score greater than 5,9. In this way,
patients with high probability of CBD stones can be submitted
to a preoperative ERCP or to a intraoperative cholangiography,
according to the choices of the surgeon.