Review for 10.1186/s12876-020-01186-2 (2020)

Reviewer ’s report  
 
Title: Gastric schwannoma with giant ulcer and lymphadenopa thy mimicking gastric cancer: a 
case report  
 
Version: 0 Date: 04 Nov 2019  
 
Reviewer: Makoto Arai  
 
Reviewer's report:  
 
The author reported a case with gastric schwannoma and the findings of PET -CT. 
 
In upper -endoscopy, there was no pathological evaluation before surgery. It is possible to 
diagnose gastric schwannoma by endoscopy and pathological examination.  
 
It is difficul t to evaluate the meaning of the finding of PET -CT in LN.  
 
Are the methods appropriate and well described?  
If not, please specify what is required in your comments to the authors.  
 
Unable to assess  
 
Does the work include the necessary controls?  
If not, please s pecify which controls are required in your comments to the authors.  
 
Unable to assess  
 
Are the conclusions drawn adequately supported by the data shown?  
If not, please explain in your comments to the authors.  
 
Unable to assess  
 
Are you able to assess any stati stics in the manus cript or would you recommend an 
additional statistical review?  
If an additional statistical review is recommended, please speci fy what aspects require further 
assessment in your comments to the editors.  
 
I am able to assess the statistics  
 
Quality of written English  
Please indicate the quality of language in the manuscript:  
 
Acceptable  
 
Declaration of competing interests  
Please complete a declaration of competing interests, considering the following questions:  
 
1.  Have you in the past five years received reimbursements, f ees, funding, or salary 
from an organisation that may in any way gain or lose financial ly from the 
publication of this manuscript, either now or in the future?  
 
2.  Do you hold any stocks or shares  in an organisation t hat may in any way gain or 
lose financially from the publication of this manuscrip t, either now or in the 
future?  
 
3.  Do you hold or are you currently applying for any patents  relating t o the content 
of the manuscript?  
 
4.  Have you recei ved reimbursements, fees, funding, or salary from an organization 
that holds or has applied for patents relating to the content of the manuscript?  
 
5.  Do you have any other financial competing interests?  
 
6.  Do you have any non -financial competing interests in relation to this paper?  
 
If you can answer no to all of the above, write 'I declare that I have  no competing interests' 
below. If your reply is yes to any, please give details below.  
 
I declare that I have no competing interests.  
 
I agree to the open peer review policy of the journal. I understan d that my name will be included 
on my report to the authors and, if the manuscript is accepted f or publication, my named report 
including any attachments I upload will be posted on the website along with the authors ' 
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CC-BY license ( http://creativecommons.org/licenses/by/4.0/ ). I understand that any comments 
which I do not wish to be included in my named report can be included as confidential comments 
to the editors, which will not be published.  
 
I agree to the open peer review policy of the journal