AIMTo establish the ability of magnetic resonance (MR) and computer tomography (CT) to predict pathologic dimensions of pancreatic neuroendocrine tumors (PanNET) in a caseload of a tertiary referral center.METHODSPatients submitted to surgery for PanNET at the Surgical Unit of the Pancreas Institute with at least 1 preoperative imaging examination (MR or CT scan) from January 2005 to December 2015 were included and data retrospectively collected. Exclusion criteria were: multifocal lesions, genetic syndromes, microadenomas or mixed tumors, metastatic disease and neoadjuvant therapy. Bland-Altman (BA) and Mountain-Plot (MP) statistics were used to compare size measured by each modality with the pathology size. Passing-Bablok (PB) regression analysis was used to check the agreement between MR and CT.RESULTSOur study population consisted of 292 patients. Seventy-nine (27.1%) were functioning PanNET. The mean biases were 0.17 +/- 7.99 mm, 1 +/- 8.51 mm and 0.23 +/- 9 mm, 1.2 +/- 9.8 mm for MR and CT, considering the overall population and the subgroup of non-functioning-PanNET, respectively. Limits of agreement (LOA) included the vast majority of observations, indicating a good agreement between imaging and pathology. The MP further confirmed this finding and showed that the two methods are unbiased with respect to each other. Considering = 2 cm non-functioning-PanNET, no statistical significance was found in the size estimation rate of MR and CT (P = 0.433). PBR analysis did not reveal significant differences between MR, CT and pathology.CONCLUSIONMR and CT scan are accurate and interchangeable imaging techniques in predicting pathologic dimensions of PanNET.

Comparison of imaging-based and pathological dimensions in pancreatic neuroendocrine tumors

PAIELLA, SALVATORE
;
Impellizzeri, Harmony Giusy Cesarina;ZANOLIN, Maria Elisabetta;MARCHEGIANI, Giovanni;MIOTTO, MARCO;Malpaga, Anna;DE ROBERTIS LOMBARDI, Riccardo;D'ONOFRIO, Mirko;RUSEV, Borislav Chavdarov;Capelli, Paola;CINGARLINI, Sara;BUTTURINI, Giovanni;DAVI', Maria Vittoria;AMODIO, ANTONIO;BASSI, Claudio;SCARPA, Aldo;SALVIA, Roberto;LANDONI, Luca
2017

Abstract

AIMTo establish the ability of magnetic resonance (MR) and computer tomography (CT) to predict pathologic dimensions of pancreatic neuroendocrine tumors (PanNET) in a caseload of a tertiary referral center.METHODSPatients submitted to surgery for PanNET at the Surgical Unit of the Pancreas Institute with at least 1 preoperative imaging examination (MR or CT scan) from January 2005 to December 2015 were included and data retrospectively collected. Exclusion criteria were: multifocal lesions, genetic syndromes, microadenomas or mixed tumors, metastatic disease and neoadjuvant therapy. Bland-Altman (BA) and Mountain-Plot (MP) statistics were used to compare size measured by each modality with the pathology size. Passing-Bablok (PB) regression analysis was used to check the agreement between MR and CT.RESULTSOur study population consisted of 292 patients. Seventy-nine (27.1%) were functioning PanNET. The mean biases were 0.17 +/- 7.99 mm, 1 +/- 8.51 mm and 0.23 +/- 9 mm, 1.2 +/- 9.8 mm for MR and CT, considering the overall population and the subgroup of non-functioning-PanNET, respectively. Limits of agreement (LOA) included the vast majority of observations, indicating a good agreement between imaging and pathology. The MP further confirmed this finding and showed that the two methods are unbiased with respect to each other. Considering = 2 cm non-functioning-PanNET, no statistical significance was found in the size estimation rate of MR and CT (P = 0.433). PBR analysis did not reveal significant differences between MR, CT and pathology.CONCLUSIONMR and CT scan are accurate and interchangeable imaging techniques in predicting pathologic dimensions of PanNET.
Diagnostic imaging; Magnetic resonance imaging; Neuroendocrine tumors; Pancreatic neoplasms; Pathological dimensions
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11562/962858
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