Review for 10.1186/s12876-019-1119-5 (2019)

Reviewer’s report
Title:  Adult  Pancreatic  Cavernous  Hemangioma:  Case  Presentation  of  A Benign  Tumor  with  a
Complex Composition
Version: 0 Date: 06 Sep 2019
Reviewer: Mauro Sollai
Reviewer's report:
The case described could deserve to be published since the rarity of the location of the lesion.
Nevertheless here are some observations:
The paper must be edited for better English. 
The Title must be changed: the term 'complex composition' is not legitimized because of the positivity
of epithelial markers.
The  microscopic  description  needs  to  be  more  detailed.  References  regarding  the  expression  of
epithelial markers need to be added. The Authors should add hematoxylin eosin images at different
magnification and show the transition with the pancreatic parenchyma. The Figures must be of higher
quality. Personally I think the some of the immunostains shown (such as F8 which I suppose is Factor
VIII and CD34) are redundant. The Figures of the immunostains should be taken from the same area of
the lesion. The Figure Legends must include the original magnification.
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.
Unable to assess
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.
Not relevant to this manuscript
Quality of written English
Please indicate the quality of language in the manuscript:
Needs some language corrections before being published
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, fees, funding, or salary from an
organisation that may in any way gain or lose financially from the publication of this
manuscript, either now or in the future?
2. Do you hold any stocks or shares in an organisation that may in any way gain or lose
financially from the publication of this manuscript, either now or in the future?
3. Do you hold or are you currently applying for any patents relating to the content of the
manuscript?
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.
I declare that I have no competing interests
I agree to the open peer review policy of the journal. I understand that my name will be included on my
report to the authors and, if the manuscript is accepted for publication, my named report including any 
attachments I upload will be posted on the website along with the authors' responses. I agree for my 
report to be made available under an Open Access Creative Commons 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