Review for 10.1186/s12876-022-02452-1 (2022)

Reviewer’s report
Title: 
EUS-guided fine needle aspiration provides an open view for duodenal
obstruction caused by urothelial carcinoma: a case report
Version: 
0 
Date: 
19 Apr 2022
Reviewer's report:
PEER REVIEWER ASSESSMENTS: 
RELEVANCE - Does this case report make a contribution to medical
knowledge, have educational value, or highlight the need for a change in clinical
practice or diagnostic/prognostic approaches? 
No, the findings of this report are well known and/or similar reports have already
been published
CASE DESCRIPTION - Are the details of the case sufficiently well described to
understand the patient's symptoms and course of treatment? 
No - there are major issues
DIAGNOSIS/INTERPRETATION - Based on the facts presented, are the
diagnosis, interpretation, and course of treatment medically sound?
Yes, the work described is medically sound
DISCUSSION OF THE CASE - Does the discussion appropriately analyse the
importance of the findings and their relevance to future understanding of disease
processes, diagnosis or treatment? Has an adequate literature review pertinent to
the case been included?
No - there are major issues
OVERALL MANUSCRIPT POTENTIAL - Could an appropriately REVISED
version of this work represent a technically sound contribution?
Maybe - with major revisions
PEER REVIEWER COMMENTS: 
GENERAL COMMENTS: I was pleased to peer review this case report of EUS
guided FNA for duodenal obstruction caused by urothelial carcinoma.
While the authors report a useful application of EUS guided FNA for a
challenging clinical case, the utilization of this diagnostic approach is not novel,
and the manuscript would benefit from considerable revision to merit publication
in its current format.
REQUESTED REVISIONS: 
Please find some comments and suggestions below in order to help improve the
manuscript further.
1) The major comment relates to the grammar and typographical errors and mis-
phrasing throughout the manuscript. It would benefit from careful review by a
native English speaker.
2) This case is interesting and challenging, and a good case for EUS guided
FNA. That is worth raising clinical awareness of. However, it is an isolated case
and has been reported as an approach previously.
3) There is very limited discussion, e.g., what are the risks of this approach, why
isn't it used more widely, what success or otherwise has been reported in other
case studies to-date?
4) The authors could perhaps enhance the value of this report by reviewing the
existing literature including other similar reports to summarize what is known to
date and add wider discussion around the benefits or otherwise of this approach.
5) The case study is well referenced.
6) The accompanying images are helpful, however please note that the arrows on
the CT scans are hard to discern as black against largely black images.
Reformatting these to improve visibility, e.g., white outlines may help address
this.
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Is the study design appropriate to answer the research question (including the use
of appropriate controls), and are the conclusions supported by the evidence
presented?
No
Are the methods sufficiently described to allow the study to be repeated?
No
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Yes
Is the presentation of the work clear?
No
Are the images in this manuscript (including electrophoretic gels and blots) free
from apparent manipulation?
Yes