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  • Title: F-18 FDG uptake on positron emission tomography as a predictor for lymphovascular invasion in patients with lung adenocarcinoma.
    Author: Noda Y, Goshima S, Kanematsu M, Watanabe H, Kawada H, Kawai N, Ono H, Bae KT.
    Journal: Ann Nucl Med; 2016 Jan; 30(1):11-7. PubMed ID: 26337532.
    Abstract:
    PURPOSE: To evaluate the contributory value of Fluorine-18 fluorodeoxyglucose (F-18 FDG) positron emission tomography/computed tomography (PET/CT) in the prediction of lymphovascular tumor invasion in patients with lung adenocarcinoma. MATERIALS AND METHODS: We evaluated F-18 FDG-PET/CT images in 84 patients with histopathologically proven lung adenocarcinoma (37 men and 47 women, age range 39-83 years, mean age 67.0 ± 8.9 years). The maximum standardized uptake values (SUVmax) of the carcinomas were measured from the PET images. The Mann-Whitney U test was conducted to compare the median SUVmax between the tumor groups with and without lymphovascular invasion. In the subgroup patients with no lymph-node metastasis, we also compared the median SUVmax between the tumor groups with and without lymphatic invasion. RESULTS: The tumors with lymphovascular invasion had a significantly (P < 0.0001) greater median SUVmax than those without invasion. In the subgroup patients with no lymph-node metastasis, the median SUVmax was higher in tumors with lymphatic invasion than those without (P = 0.0004). The sensitivity, specificity, and area under the receiver operating characteristic curve for the detection of tumors with lymphovascular invasion were 89, 75 %, and 0.82, respectively, with a cutoff SUVmax value of 2.32. CONCLUSION: The SUVmax of lung adenocarcinoma is a potential imaging biomarker for predicting tumor lymphovascular invasion.
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