Background: Accurate preoperative radiological staging of biliary cancers remains difficult. Despite the improvement in imaging techniques, a number of patients with biliary cancers who undergo laparotomy are ultimately found to have unresectable diseases. The goals of staging laparoscopy (SL) are to rule out metastatic and locally advanced unresectable diseases and better define locally advanced unresectable diseases. This study evaluates the efficiency of SL in ruling out unresectable disease in a subset of biliary cancers.
Methods: Literature published between January 2000 and December 2015 on the use of SL for patients with biliary cancers was retrieved from five electronic databases. Summary estimates of sensitivity, specificity and diagnostic odds ratio were calculated.
Results: Eight studies were included in the meta-analysis. During the laparoscopy, unresectable disease was found in 316 of 1062 patients (29.8%), of whom 32.4% were patients with suspected hilar cholangiocarcinoma (HC) and 27.6% were patients with suspected gallbladder cancer (GBC). The sensitivities were 0.556 (95% confidence interval (CI): 0.495-0.616) for patients with HC and 0.642 (95% CI: 0.579-0.701) for patients with GBC. The pooled specificity for the SL was 100% (95% CI: 0.993-1.000) for all studies.
Conclusions: This meta-analysis revealed that 32.4% of patients with HC and 27.6% of patients with GBC may avoid unnecessary laparotomy with the use of SL. It is worthwhile to perform SL combined with an intraoperative ultrasound in patients with suspected GBC or HC.
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