Review for 10.1186/s12876-016-0533-1 (2016)

Reviewer ’s report  
 
Title: Collagenous Colitis Presenting as Spontaneous Perfo ration in an 80 year old woman: 
Report  of a Case  
 
Version: 1 Date: 03 Aug 2016  
 
Reviewer: David Sachar  
 
Reviewer's report:  
 
The authors have enriched their manuscript with a deeper discussion of th e differentiation from 
ischemia. The fact is, I have not the slightest doubt that their patient indeed had clear -cut 
collagenous colitis. What I still find lacking, however, is thorough and detailed histologic 
documentation of the ABSENCE of any features o f ischemia IN ADDITION TO the evidence of 
concomitant CC.  
 
 
 
 
Are the methods appropri ate and well described?  
If not, please specify what is required in your comments to the authors.  
 
Yes 
 
Does the work include the necessary controls?  
If not, please specify which controls are required in your comments to the authors.  
 
Yes 
 
Are the conclusions dr awn adequately supported by the data shown?  
If not, please explain in your comments to the authors.  
 
No 
 
Are 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 further  
assessment in your comments to the editors.  
 
Not relevant to this manuscript  
 
Quality of written English  
Please indicate the quality of language in the manuscript : 
 
Acceptable  
Declaration of competing interests  
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5. Do you have any other financial competing interests?  
 
6. Do you have any non -financial competing interests in relation to this paper?  
 
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below.  If your reply is yes to any, please give details below.  
 
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