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  • Title: Symptomatic presentation as a predictor of recurrence in gastroenteropancreatic neuroendocrine tumors: A single institution experience over 15 years.
    Author: Baptiste GG, Postlewait LM, Ethun CG, Le N, McInnis MR, Russell MC, Winer JH, Kooby DA, Staley CA, Maithel SK, Cardona K.
    Journal: J Surg Oncol; 2016 Aug; 114(2):163-9. PubMed ID: 27157897.
    Abstract:
    BACKGROUND AND OBJECTIVES: The prognostic implication of symptomatic presentation of gastroenteropancreatic neuroendocrine tumors (GEP-NETs) remains unclear. METHODS: Patients who underwent resection of nonfunctional GEP-NETs (2000-2014) were analyzed. Primary outcomes were overall survival (OS) and distant recurrence-free survival (RFS). RESULTS: Symptomatic presentation was seen in 208 (61%) of 339 patients and was associated with younger age (55 vs. 59 yrs, P = 0.001), higher tumor grade (38% vs. 21%, P = 0.027), presence of lymphovascular invasion (58% vs. 33%, P < 0.001), presence of perineural invasion (54% vs. 29%, P = 0.002), and advanced disease (T3/T4/N1/M1 [63% vs. 44%, P = 0.002]), but not tumor size (2.6 vs. 2.5 cm, P = 0.74). Symptomatic presentation was associated with decreased 3-yr distant-RFS (80% vs. 89%, P = 0.012), but not OS. When accounting for adverse features, symptomatic presentation remained independently associated with reduced distant-RFS (HR 3.51, P = 0.007). On subgroup-analysis of advanced disease patients, symptomatology was associated with reduced 3-yr distant-RFS (67% vs. 79%, P = 0.012) and persisted as an independent risk-factor for decreased distant-RFS (HR 3.01, P = 0.027). CONCLUSIONS: Symptomatic presentation of GEP-NETs is associated with aggressive features and worse distant-RFS. Trials assessing adjuvant therapy for advanced GEP-NETs are needed, and symptomatic presentation may be considered as one inclusion criterion. Following resection, symptomatic presentation should be taken into account when planning surveillance. J. Surg. Oncol. 2016;114:163-169. © 2016 Wiley Periodicals, Inc.
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