BACKGROUND/AIM: The purpose of the present study was to improve the diagnostic precision of 18F-fluorodeoxyglucose positron emission tomography/computed tomography (FDG-PET/CT) after neoadjuvant chemotherapy (NAC) in patients with advanced esophageal cancer. PATIENTS AND METHODS: Thirty patients underwent FDG-PET/CT before and after NAC. The maximum standardized uptake value (SUVmax) and metabolic tumor volume (MTV) were measured. Patients were divided into two pathological response groups: "responders" (grades 1b-3) or "non-responders" (grades 0-1a). RESULTS: Overall, 11 patients were responders. Significant differences were present for the post-NAC SUVmax (p=0.070), %decrease in SUVmax (p=0.017), post-NAC MTV (p=0.014), and %decrease in MTV (p=0.003). CONCLUSION: Receiver operating characteristic curve analysis showed that the %decrease in MTV of the primary tumor was the best indicator of response to NAC. We are currently striving to improve the accuracy of this assessment method. Copyright
BACKGROUND/AIM: The purpose of the present study was to improve the diagnostic precision of 18F-fluorodeoxyglucose positron emission tomography/computed tomography (FDG-PET/CT) after neoadjuvant chemotherapy (NAC) in patients with advanced esophageal cancer. PATIENTS AND METHODS: Thirty patients underwent FDG-PET/CT before and after NAC. The maximum standardized uptake value (SUVmax) and metabolic tumor volume (MTV) were measured. Patients were divided into two pathological response groups: "responders" (grades 1b-3) or "non-responders" (grades 0-1a). RESULTS: Overall, 11 patients were responders. Significant differences were present for the post-NAC SUVmax (p=0.070), %decrease in SUVmax (p=0.017), post-NAC MTV (p=0.014), and %decrease in MTV (p=0.003). CONCLUSION: Receiver operating characteristic curve analysis showed that the %decrease in MTV of the primary tumor was the best indicator of response to NAC. We are currently striving to improve the accuracy of this assessment method. Copyright
Authors: M Hart Squires; Nicole Gower; Jennifer H Benbow; Erin E Donahue; Casey E Bohl; Roshan S Prabhu; Joshua S Hill; Jonathan C Salo Journal: Ann Surg Oncol Date: 2021-10-09 Impact factor: 5.344