Review for 10.1186/s12876-019-1118-6 (2019)

Reviewer’ s report
Title: Incidental finding of diffuse cavernous rectal haemangiomatosis during bowel cancer
screening
Version: 1Date: 03 Aug 2019
Reviewer: Kazutomo Togashi
Reviewer's report:
PThis case report is well written, presenting a rare disease. However. description is redundant in
several parts. For instance, following sentences is unnecessary, "The colonoscopy alsodemonstrated a sessile polyp 3mm in diameter at the appendix orifice. This was resected en blocand subsequent histology confirmed a tubular adenoma with low-grade dysplasia and no invasionof the muscularis propria. (page4, line 26)". In addition, image quality of the colonoscopy is nothigh. After removing the feces, authors should take pictures again.
Are the methods appropriate and well described?
If not, please specify what is required in your comments to the authors.
YesDoes the work include the necessary controls?
If not, please specify which controls are required in your comments to the authors.
No
Are the conclusions drawn adequately supported by the data shown?
If not, please explain in your comments to the authors.
YesAre you able to assess any statistics in the manuscript or would you recommend an
additional statistical review?If an additional statistical review is recommended, please specify what aspects require furtherassessment in your comments to the editors.
Not relevant to this manuscriptQuality of written English
Please indicate the quality of language in the manuscript:
Acceptable
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