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Kumar clamp versus Olsen cAtheter for Laparoscopic intraoperative cholAngiography (KOALA)

To assess whether cholangiography using the Kumar clamp is faster and easier than using the Olsen catheter.

Diagnostic accuracy of MRI for gallbladder polyps;
a prospective diagnostic pilot study

Primairy objective: To determine the diagnostic accuracy of MRI for the (differential) diagnosis of GB polyps and the differentiation between true and pseudo polyps in patients with suspected GB polyp(s) on previous imaging modality (TAUS) by using…

Scrutinizing (in)efficient use of cholecystectomy: a randomized trial concerning variation in practice.

Current practice variation in selection of patients with gallbladder stones and abdominal complaints for cholecystectomy is not efficient. Here we evaluate stepwise selection for surgery to improve patient outcome and to reduce the number of…