Review for 10.1186/s12876-022-02189-x (2022)

Reviewer’s report
Title: 
Undifferentiated high-grade pleomorphic sarcoma of the colon: A rare
case report and literature review
Version: 
1 
Date: 
13 Oct 2021
Reviewer's report:
I am glad that the authors have worked on increasing the readability of the
manuscript by incorporating the reviewer comments. 
However, I still feel the need for some essential changes 
- Page 1, line 5 - "In the examination of the 65-year-old female, an irregularly
thickened wall of the descending colon was observed with computer tomography
(CT), and an ulcerative tumor of the descending colon was observed by the
colonoscopy with virtual chromoendoscopy." Please mention clinical
examination and radiological examination in separate lines. This sentence can be
reframed as - On physical examination, no mass per abdomen could be
appreciated, however, the computed tomography scan revealed a tutor of the
descending colon. On a colonoscopic examination, an ulcerative tumour was
identified. 
- Page 3, line 2 - Please modify - "In this study, a rare case report of high-graded
UPS of descending colon was reported to analyze the characteristics of UPS."
This is a case report, not a study. 
Please change to - We report a rare case of high grade UPS of the colon. 
- Page 3, line 18 - Change the sentence "Through CT examination, the irregularly
thickened descending colon wall can be observed" - CT imaging revealed an
irregularly thickened descending colon 
Line 21 - the word electronic colonoscopy has been used - please change 
- Please use a single tense - present and past tense has been used
interchangeably. for example - 'The small intestine was invaded by the tumor,
which is 10 cm away from the ligament of Treitz. " Please change to 'which was"
- Page 4 heading - Discussion and conclusions - We cannot conclude on the basis
of one case report - please omit the word conclusions 
- Replace 'this study' by 'this case' wherever applicable.
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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
Are the methods sufficiently described to allow the study to be repeated?
Yes
Is the use of statistics and treatment of uncertainties appropriate?
Yes
Is the presentation of the work clear?
Yes
Are the images in this manuscript (including electrophoretic gels and blots) free
from apparent manipulation?
Yes