Review for 10.1186/s12876-020-01380-2 (2020)

Reviewer’ s report
Title: Retroperitoneal Laparoscopic Hepatectomy of Recurrent Hepatocellular Carcinoma: Case
Report and Literature Review
Version: 1Date: 20 Jun 2020
Reviewer: Antonio Calvo
Reviewer's report:
Response to authors:1.Title.
According to the change of the title. It is more appropriate concerning the case presented by theauthors.
2.Recurrent hepatocellular carcinoma
There has been a recurrence of the disease two years after the first surgery. I do not know if theauthors considered the risk factors in the piece resected in the first surgery, which would haveprovided valuable information on the prognosis of the disease, and perhaps, at that time, had beenincluded in the liver transplant program. The reviewer does not judge the considerations betweenthe medical team, the patient, and the family about the final therapeutic decision.
3. Surgical Information
Laparoscopic retroperitoneal hepatectomy is a safe method that can be applied to the partialresection of small and superﬁcial tumors of the right posterior segment of the liver, however, it is
not a valid and universal treatment option for all tumors.
Yes, it is true that in the manuscript it is mentioned that the retroperitoneum is cut into theperitoneal cavity, but authors should indicate in the conclusions of the abstract that the surgicalprocedure is not pure retroperitoneal access.
4- Discussion
I think that there is an excess of data in the discussion of laparoscopic liver procedures, and thefundamental objective of the case is the retroperitoneal approach for the surgical treatment of thistumor.
5. Pathology
Thank you for the correction. Indeed this image corresponds to the pathological descriptionincluded in the text.
6. Reference
Although it has removed some bibliographic references, they are excessive. The subject theypresent is the retroperitoneal approach, which is interesting for being novel and gives interest tothe case presented, but the excess of information and bibliographic citations on the development of
laparoscopic surgery should consider reducing.
Citations must be in black, although the editor will consider it.
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Acceptable
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