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https://hdl.handle.net/11499/9934
Title: | Liver metabolic activity changes over time with neoadjuvant therapy in locally advanced rectal cancer | Authors: | Demir, Y. Sürücü, E. Şengöz, Tarık Koç, M. Kaya, G.C. |
Keywords: | 18F-FDG PET/CT Dual time Lean body mass corrected standardized uptake value Locally advanced rectal cancer Standardized uptake value fluorodeoxyglucose f 18 adjuvant chemoradiotherapy adult aged cancer staging computer assisted tomography drug effects female human liver male metabolism middle aged multimodal imaging neoadjuvant therapy pathology positron emission tomography radiation response Rectal Neoplasms retrospective study scintiscanning time factor very elderly Adult Aged Aged, 80 and over Chemoradiotherapy, Adjuvant Female Fluorodeoxyglucose F18 Humans Liver Male Middle Aged Multimodal Imaging Neoadjuvant Therapy Neoplasm Staging Positron-Emission Tomography Retrospective Studies Time Factors Tomography, X-Ray Computed |
Publisher: | Lippincott Williams and Wilkins | Abstract: | Objective The aim of this study was to evaluate, using PET/computed tomography (CT), changes in liver metabolic activity in patients with locally advanced rectal cancer (LARC) after neoadjuvant chemoradiotherapy (CRT). Patients and methods A total of 29 biopsy-proven LARC patients between 2009 and 2012 were studied. Liver standardized uptake values (SUVs) and SUVs adjusted for lean body mass (SULs) were obtained from PET/CT images obtained at 1 h (early) and 2 h (late) after 18F-fluorodeoxyglucose (18F-FDG) administration both before and after neoadjuvant CRT. Age, sex, BMI, lean body mass, blood glucose level, and 18F-FDG dose, which can influence liver SUVs and SULs, were also analyzed. Results Fourteen (48%) men and 15 (52%) women with a mean age of 62±11 years (range 34-80 years) were included in the study. The mean SUVs and SULs were significantly decreased in the late scans. Sex was significantly correlated with the mean liver SUV in early and late scans. The mean SUV differed significantly between male and female patients in early and late images (P<0.05). In a multivariate stepwise regression analysis, only liver SUVs (maximum and mean) were significantly associated with BMI before and after therapy. SUVs were significantly higher in the high (?25) BMI group after but not before therapy. Mean SUL was not influenced by BMI. Conclusion Liver 18F-FDG uptake is consistent before and after neoadjuvant CRT therapy in patients with LARC. When assessing response to therapy and using liver metabolic activity to indicate background activity, BMI should be considered as it can influence liver metabolic activity. Copyright © 2016 Wolters Kluwer Health, Inc. All rights reserved. | URI: | https://hdl.handle.net/11499/9934 https://doi.org/10.1097/MNM.0000000000000412 |
ISSN: | 0143-3636 |
Appears in Collections: | PubMed İndeksli Yayınlar Koleksiyonu / PubMed Indexed Publications Collection Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection Tıp Fakültesi Koleksiyonu WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection |
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