Review for 10.1186/s12876-021-01996-y (2021)

Reviewer’s report
Title: 
Focal IgG4-related autoimmune pancreatitis with distal choledochal
adenocarcinoma: a rare case report
Version: 
0 
Date: 
21 Sep 2021
Reviewer's report:
The authors have presented an interesting case of autoiimune pancreatitis (AIP)
coexisting with bile duct adenocarcinoma. I have following comments regarding
the manuscript.
1. Please mention whether steroids were administered after the initial diagnosis
of AIP? If not then why?
2. Please mention the following details about the operation: main pancreatic duct
diameter, pancreatic texture, type of pancreatic anastomosis performed, operative
time, blood loss. 
3. Please mention about the postoperative course of the patient especially any
complications and the duration of hospital stay.
4. In the histology report, please state the histology of the pancreatic tissue
adjacent to the tumor and whether it showed changes of AIP, number of lymph
nodes retrieved and number of positive lymph nodes.
5. The discussion is too lengthy. Please revise it to make it more concise and
relevant.
6. Please mark the site of lesion in the figures with arrows.
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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
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Yes
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Yes
Are the images in this manuscript (including electrophoretic gels and blots) free
from apparent manipulation?
Yes