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

Reviewer’s report
Title: 
Extraction of Intra-biliary Hepatocellular Carcinoma by Endoscopic
Retrograde Cholangiopancreatography
Version: 
0 
Date: 
31 Jul 2020
Reviewer's report:
This is a nicely written case report describing a very interesting finding of intra-
ductal tumor-tissue masquerading as gallstones. 
Just one clarification - I assume the tumor fragments in the duct were big enough
to be obstructing and were the cause of the patients cholangitis? If so, wouldn't
placing a stent be important to prevent recurrent build-up of intra-ductal tumor
and recurrent obstruction?
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