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Concomitant pancreatic endocrine neoplasm and intraductal papillary mucinous neoplasm: a case report and literature review

Overview of attention for article published in World Journal of Surgical Oncology, March 2013
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Title
Concomitant pancreatic endocrine neoplasm and intraductal papillary mucinous neoplasm: a case report and literature review
Published in
World Journal of Surgical Oncology, March 2013
DOI 10.1186/1477-7819-11-75
Pubmed ID
Authors

Yoshie Kadota, Masahiro Shinoda, Minoru Tanabe, Hanako Tsujikawa, Akihisa Ueno, Yohei Masugi, Go Oshima, Ryo Nishiyama, Masayuki Tanaka, Kisho Mihara, Yuta Abe, Hiroshi Yagi, Minoru Kitago, Osamu Itano, Shigeyuki Kawachi, Koichi Aiura, Akihiro Tanimoto, Michiie Sakamaoto, Yuko Kitagawa

Abstract

We report a case of concomitant pancreatic endocrine neoplasm (PEN) and intraductal papillary mucinous neoplasm (IPMN). A 74-year-old man had been followed-up for mixed-type IPMN for 10 years. Recent magnetic resonance images revealed an increase in size of the branch duct IPMN in the pancreas head, while the dilation of the main pancreatic duct showed minimal change. Although contrast-enhanced computed tomography and magnetic resonance imaging did not reveal any nodules in the branch duct IPMN, endoscopic ultrasound indicated a suspected nodule in the IPMN. A malignancy in the branch duct IPMN was suspected and we performed pylorus-preserving pancreatoduodenectomy with lymphadenectomy. The resected specimen contained a cystic lesion, 10 x 10 mm in diameter, in the head of the pancreas. Histological examination revealed that the dilated main pancreatic duct and the branch ducts were composed of intraductal papillary mucinous adenoma with mild atypia. No evidence of carcinoma was detected in the specimen. Incidentally, a 3-mm nodule consisting of small neuroendocrine cells was found in the main pancreatic duct. The cells demonstrated positive staining for chromogranin A, synaptophysin, and glucagon but negative staining for insulin and somatostatin. Therefore, the 3-mm nodule was diagnosed as a PEN. Since the mitotic count per 10 high-power fields was less than 2 and the Ki-67 index was less than 2%, the PEN was pathologically classified as low-grade (G1) according to the 2010 World Health Organization (WHO) criteria. Herein, we review the case and relevant studies in the literature and discuss issues related to the synchronous occurrence of the relatively rare tumors, PEN and IPMN.

Twitter Demographics

The data shown below were collected from the profile of 1 tweeter who shared this research output. Click here to find out more about how the information was compiled.

Mendeley readers

The data shown below were compiled from readership statistics for 35 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
Unknown 35 100%

Demographic breakdown

Readers by professional status Count As %
Student > Doctoral Student 6 17%
Researcher 5 14%
Unspecified 4 11%
Student > Bachelor 3 9%
Other 3 9%
Other 9 26%
Unknown 5 14%
Readers by discipline Count As %
Medicine and Dentistry 20 57%
Unspecified 4 11%
Agricultural and Biological Sciences 2 6%
Neuroscience 1 3%
Arts and Humanities 1 3%
Other 0 0%
Unknown 7 20%

Attention Score in Context

This research output has an Altmetric Attention Score of 1. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 22 March 2013.
All research outputs
#4,606,336
of 6,228,985 outputs
Outputs from World Journal of Surgical Oncology
#561
of 1,171 outputs
Outputs of similar age
#65,970
of 98,451 outputs
Outputs of similar age from World Journal of Surgical Oncology
#18
of 54 outputs
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We're also able to compare this research output to 54 others from the same source and published within six weeks on either side of this one. This one is in the 1st percentile – i.e., 1% of its contemporaries scored the same or lower than it.