Review for 10.1186/s12876-021-01744-2 (2021)

Reviewer’s report
Title: 
A case of intraductal tubulopapillary neoplasm of the pancreas in a branch
duct: a rare case report and literature review
Version: 
0 
Date: 
12 Jan 2021
Reviewer: 
Ayrat Radikovich Kaldarov
Reviewer's report:
Thanks a lot for this quite interesting publication about the rare tumour. The
authors give a very clear review of the world data about the ITPN. 
However, I've got some questions:
1. I didn't find the lymph nodes harvest after the performed PD. How many of
them were metastatic? 
2. I didn't find any margin resection status "R". Of course I understand that it's
R0 
3. I didn't understand why the authors decided to perform the surgery in this
case. The tumor was looking like a benign on the MRCP scans. The FNA haven't
shown any malignancy. The size of the neoplasm was about 25 mm. 
4. Has the previous CT scans revealed any lesion in the pancreatic head before? 
5. There is no discussion about the age of the patient in this case. It can be quite
dangerous to perform such surgery in 85. 
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