Review for 10.1186/s12876-021-01970-8 (2021)

Reviewer’s report
Title: 
A rare variation of duplicated portal vein: left branch derived from splenic
vein mimicking cavernous transformation
Version: 
0 
Date: 
23 Apr 2021
Reviewer's report:
This is a case report of unusual portal venous anatomy. There is an aberrant
portal vein branch coming off the splenic vein. However, the patient in question
remained asymptomatic after 67 years of life. As such, the article is more of a
novelty and less useful clinically.
Strengths: the images are quite nice, especially the 3D reconstruction.
Weaknesses: The writing (English language) is not fit for publication. The
manuscript would need a thorough revision by a native English speaker. The
finding is really incidental and did not cause any disease in a 67 year old woman.
The case report may be more suitable for a radiology journal that publishes case
reports.
Other suggestions: The abstract contains abbreviations before being defined. In
general, abbreviations should be defined the first time they are used (even in the
abstract).
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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?
Yes
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from apparent manipulation?
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