Review for 10.1186/s12876-021-02064-1 (2021)

Reviewer’s report
Title: 
Ultrasound contrast agent Sonazoid for the diagnosis of hepatic epithelioid
angiomyolipoma :a  case report
Version: 
0 
Date: 
06 Jul 2021
Reviewer's report:
Abstract
1) Liver1. Is it typographical error? 
Background
2) First parag: I suggest the author to start with HEAML as this is the focus of
the manuscript and relate it to angiomyolipoma, not the other way around. 
-To include what are the common practice for diagnosis prior to describing the
problem related to the practices n suggesting the use of sonazoid to solve it.
-Avoid of using "this study/research" to refer to this manuscript, as this
manuscript is studying a case. For example, "Our study aimed.." is more
appropriate to write "case study". Same too with line 23, 50, 51 etc. 
Case presentation
-Need to introduce the case properly in the first paragraph. Some information of
past medical history is in the middle. Same too with the results of laboratory
investigations. 
Discussion and conclusion
-"Only a few more than 409 cases of EAML have been reported to date"- To
clarify this as I am not sure if this is from reading or from the author's hospital
statistic. need to include reference here if needed. 
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