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. 2012 May;105(6):595-600.
doi: 10.1002/jso.22118. Epub 2011 Oct 17.

Survival impact of malignant pancreatic neuroendocrine and islet cell neoplasm phenotypes

Christina L Roland  1 , Aihua Bian, John C Mansour, Adam C Yopp, Glen C Balch, Rohit Sharma, Xian-Jin Xie, Roderich E Schwarz
Affiliations

Survival impact of malignant pancreatic neuroendocrine and islet cell neoplasm phenotypes

Christina L Roland et al. J Surg Oncol. 2012 May.

Abstract

Background: The low incidence of malignant "functional" (F) or "nonfunctional" (NF) neuroendocrine islet cell tumors (ICTs) of the pancreas represents a challenge to precise post-therapeutic survival prediction. This study examined the survival impact of malignant pancreatic ICT morphologic subtypes.

Methods: A pancreatic ICT data set was created from a US-based population database from 1980-2004. Prognostic factors with survival impact and relationships between surgical therapy and overall survival (OS) were analyzed.

Results: There were 2,350 individuals with malignant ICTs. Histologic subtypes included carcinoid tumors, islet cell carcinomas, neuroendocrine carcinomas, and malignant gastrinomas, insulinomas, glucagonomas, or VIPomas. There was no difference in resection rates between FICTs and NFICTs (23% vs. 20%, P = ns). Median OS was 30 months, with group differences ranging from NE carcinomas (21) to VIPomas (96; P < 0.0001). Median OS of resected versus unresected FICTs was 172 versus 37 months, while that of NFICTs was 113 versus 18 months (P < 0.0001). Compared to neuroendocrine carcinomas, hazard ratios were: VIPomas 0.48, gastrinomas 0.65, carcinoid tumors 0.76, insulinomas 0.84, glucagonomas 0.93, and islet cell carcinomas 1.0.

Conclusions: When controlled for other established prognostic parameters, histopathologic subtype assignment of pancreatic ICTs affects survival prediction. Resection is associated with superior survival for all tumor types.

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Figures

Figure 1
Figure 1. Overall survival
1A: entire patient cohort 1B: by histologic type 1C: by grade 1D: by stage
Figure 2
Figure 2
Overall survival by functional status and resection status
See this image and copyright information in PMC

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