Incidence of port-site metastasis after undergoing robotic surgery for biliary malignancies

Table 1 Demographic and clinicopathological characteristics of the patients undergoing robotic surgery for biliary tract cancers

Characteristics	No. of patients (n = 64)
Age (yr)
Median	67
Range	40-85
Gender
Male	37
Female	27
Tumor locations
Intra-hepatic biliary cancer	3
Hiliar biliary cancer	39 (1 conversion, 1 death)
Middle biliary cancer	1
Distal biliary cancer	10 (1 conversion, 1 death)
Gallbladder cancer	11
Conversion to open procedures	2
Presence of ascites
Yes	8
No	56
Use of retrieval bags
Yes	55
No	9
Postoperative adjuvant radiochemotherapy
Yes	29
No	35
Port-site metastasis	2