Prognostic value of a three-scale grading system based on combining molecular imaging with 68 Ga-DOTATATE and 18 F-FDG PET/CT in patients with metastatic gastroenteropancreatic neuroendocrine neoplasias
We investigated on the added prognostic value of a three-scale combined molecular imaging with Ga-DOTATATE and F-FDG PET/CT, (compared to Ki-67 based histological grading), in gastroenteropancreatic neuroendocrine neoplasia patients. 85 patients with histologically proven metastatic gastroenteropanc...
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Published in | Oncotarget Vol. 11; no. 6; p. 589 |
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Main Authors | , , , , , , , , , , , , , |
Format | Journal Article |
Language | English |
Published |
United States
11.02.2020
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Subjects | |
Online Access | Get full text |
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Summary: | We investigated on the added prognostic value of a three-scale combined molecular imaging with
Ga-DOTATATE and
F-FDG PET/CT, (compared to Ki-67 based histological grading), in gastroenteropancreatic neuroendocrine neoplasia patients. 85 patients with histologically proven metastatic gastroenteropancreatic neuroendocrine neoplasias, who underwent combined PET/CT imaging were retrospectively evaluated. Highest Ki-67 value available at time of
F-FDG PET/CT was recorded. Patients were classified according to World Health Organization/European Neuroendocrine Tumor Society histological grades (G1, G2, G3) and into three distinct imaging categories (C1: all lesions are
F-FDG negative/
Ga-DOTATATE positive, C2: patients with one or more
F-FDG positive lesions, all of them
Ga-DOTATATE positive, C3: patients with one or more
F-FDG positive lesions, at least one of them
Ga-DOTATATE negative). The primary endpoint of the study was Progression-Free Survival, assessed from the date of
F-FDG PET/CT to the date of radiological progression according to Response Evaluation Criteria In Solid Tumors version 1.1. Classification according to histological grade did not show significant statistical difference in median Progression-Free Survival between G1 and G2 but was significant between G2 and G3 patients. In contrast, median Progression-Free Survival was significantly higher in C1 compared to C2 and in C2 compared to C3 patients, revealing three distinctive imaging categories, each with highly distinctive prognosis. Our three-scale combined
Ga-DOTATATE/
F-FDG PET imaging classification holds high prognostic value in patients with metastatic gastroenteropancreatic neuroendocrine neoplasias. |
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ISSN: | 1949-2553 |