Review for 10.1186/s12876-022-02398-4 (2022)

Reviewer’s report
Title: 
A rare case with multiple arterial variations of the liver complicated
laparoscopic pancreaticoduodenectomy
Version: 
1 
Date: 
09 May 2022
Reviewer's report:
Thank you for addressing the comments and highlighting the importance of
variant arterial anatomy in pancreaticoduodenectomy.
The point is if one looks at the CT reconstructions in Fig. 3 (with the benefit of
hindsight of course), the CHA gives off the seg 4 artery, continues with a
downward course (usual direction for GDA) and branches off into a RHA which
loops upward and a pancreatiocduodenal artery (PDA) which goes downward. 
If you relabel your figures by changing GDA to PHA and PDA to GDA, then it
suddenly makes a lot of surgical sense! 
Encountering an unusually large GDA at pancreaticoduodenectomy should also
alert the surgeon as to whether one is dealing with an artery that might be
supplying the liver, even if the location and direction is suggestive of GDA
You could emphasize these points in a way you deem appropriate to enhance the
value of the message you are trying to convey.
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