Reliability and Agreement of Radiological and Pathological Tumor Size in Patients with MEN1-Related Pancreatic Neuroendocrine Tumors: Results from a Population-Based Cohort

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Introduction: Pancreatic neuroendocrine tumors (pNETs) are the most lethal manifestation in patients with multiple endocrine neoplasia type 1 (MEN1). Tumor size is still regarded as the main prognostic factor and therefore used for surgical decision making.

Aim(s): To assess reliability and agreement of radiological and pathological tumor size in a population-based cohort of patients with MEN1-related pNETs.

Materials and methods: Patients with a resected pNET were selected from the Dutch MEN1 database. Radiological (magnetic resonance imaging (MRI), computed tomography (CT) and endoscopic ultrasonography (EUS)) and pathological tumor size were collected. Measures of agreement (Bland-Altman plots with limits of agreement (LoA) and absolute agreement) and reliability (Intraclass Correlation Coefficients (ICC) and unweighted Kappa) were calculated for continuous and categorized (< or ≥ 2 cm) pNET size.

Conference: 17th Annual ENETSConcerence (2020)

Presenting Author: van Beek D

Authors: van Beek D, Verkooijen H, Bonsing B, van Eijck C, van Goor H,

Keywords: Multiple endocrine neoplasia type 1, pancreatic neuroendocrine tumor, reliability, agreement, computed tomography, magnetic resonance imaging, endoscopic ultrasonography, pathology,