Review for 10.1186/s12876-019-1087-9 (2019)

Reviewer’s report
Title: Pneumatosis Cystoides Intestinalis: A case report and literature review
Version: 1 Date: 24 Jul 2019
Reviewer: Yuusaku Sugihara
Reviewer's report:
Reviewer
Comments to the Author
In this case report, the authors reported the case of Pneumatosis Cystoides Intestinalis
. These data will most likely prove to be a unique resource well. However, I think that there are many 
problems with the structural models used, as indicated below. 
Major 
 In this case report, mucosal resection was performed endoscopically for diagnosis of PCI, but in 
general, biopsy is not necessary for diagnosis of PCI, and it is possible to carry out only with an image. 
Please describe the reason for performing to the resection in this time.
 Minor 
 In EUS image, please specify which part is shown in the image with arrows.
The pathological image is very unclear, so please change it.
Are the methods appropriate and well described?
If not, please specify what is required in your comments to the authors.
Yes
Does the work include the necessary controls?
If not, please specify which controls are required in your comments to the authors.
Yes
Are the conclusions drawn adequately supported by the data shown?
If not, please explain in your comments to the authors.
Yes
Are you able to assess any statistics in the manuscript or would you recommend an
additional statistical review?
If an additional statistical review is recommended, please specify what aspects require further
assessment in your comments to the editors.
I recommend additional statistical review
Quality of written English
Please indicate the quality of language in the manuscript:
Acceptable
Declaration of competing interests
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4.Have you received 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.
none
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