Review for 10.1186/s12876-021-02053-4 (2021)

Reviewer’s report
Title: 
Significant response to atezolizumab plus bevacizumab treatment in
unresectable hepatocellular carcinoma with major portal vein tumor thrombus: a
case report
Version: 
0 
Date: 
20 Oct 2021
Reviewer's report:
Dear authors,
Thanks for your nice case report. As you mentioned, it is very uncommon to
have this marvelous response in a patient with advanced HCC.
Just i have two comments:
1. You need to clarify the reason to continue with monotherapy (atezolizumab)
while stopped bevacizumab.
2. You need to clarify if there were actual reasons for this excellent response. 
Many thanks again
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