Review for 10.1186/s12876-020-01552-0 (2020)

Reviewer’s report
Title: 
Extraction of Intra-biliary Hepatocellular Carcinoma by Endoscopic
Retrograde Cholangiopancreatography
Version: 
1 
Date: 
28 Oct 2020
Reviewer's report:
The authors successfully responded to reviewer comments. 
One minor point, in response to asking whether a stent was placed during ERCP,
the authors stated that malignancy was not confirmed and therefore no stent was
placed prophylactically. However, I would be concerned about obstruction
regardless of whether its malignant or benign disease, and I think the reason for a
stent not being placed should be that the obstruction was resolved (aka all
contrast drained after removal of obstructing lesions).
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