Review for 10.1186/s12876-021-01617-8 (2021)

Reviewer’s report
Title: 
CT differentiation of gastric ectopic pancreas from gastric stromal tumors
Version: 
1 
Date: 
04 Jul 2020
Reviewer's report:
The author used CT features to differentiate gastric ectopic pancreas from gastric stromal tumors. This is
a study with meaningful clinical application value. Because these two submucosal tumor sometimes are
difficult to get histopathological results from endoscopic biopsy. Although there are similar studies have
been published, for example the reference No.14, this study provides additional CT findings.
strengths:
The relatively large sample size is for the rare GEPs. Detailed CT features analysis supports the results.
Limitation:
The study only compares GEP and GIST. We do not know whether the results are applicable to the
differential diagnosis of other submucosal tumors. However, the author also mentions this point in the
limitations part of the article.
List of Major Points:
None
List of Minor Points:
1) 
In imaging analysis of Materials and Methods, the authors say "All CT images were respectively
interpreted by two radiologists". However, from the tables of results, it seems only has one observer's
data. Please clarified it. 
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No
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?
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Yes
Are the conclusions drawn adequately supported by the data shown?
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Yes
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I am able to assess the statistics
Quality of written English
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Acceptable
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