Hsu W.-H.Hsu N.-Y.Shen Y.-Y.RUOH-FANG YENKao C.-H.2020-09-232020-09-2320030735-7907https://scholars.lib.ntu.edu.tw/handle/123456789/514545The purpose of this preliminary study is to evaluate the characteristics of solitary pulmonary lesions in patients using extrapulmonary neoplasmas with 18F-fluoro-2-deoxyglucose positron emission tomography (FDG-PET). Thirty-two patients with extrapulmonary neoplasmas who had solitary pulmonary lesions and were suspected for pulmonary metastasis underwent an oncological survey with FDG-PET. Standard uptake value (SUV) and the ratio of lesion-to-background (L/B ratio) were used as parameters to differentiate and characterize the solitary pulmonary lesions. Using SUV > 2.5 or L/B ratio > 3 as the cutoff to diagnose malignancy, FDG-PET correctly identified 29 true-positive cases. However, FDG-PET failed to interpret two false-positive and one false-negative cases. The accuracy of FDG-PET was 91%. We concluded that FDG-PET is an accurate modality to differentiate solitary pulmonary lesions in patients with extrapulmonary neoplasmas.[SDGs]SDG3fluorodeoxyglucose f 18; adult; aged; article; cancer diagnosis; clinical article; differential diagnosis; female; human; lung cancer; lung metastasis; male; metastasis; oncology; positron emission tomography; priority journal; Adult; Aged; Aged, 80 and over; Coin Lesion, Pulmonary; Diagnosis, Differential; False Negative Reactions; False Positive Reactions; Female; Fluorodeoxyglucose F18; Humans; Lung Neoplasms; Male; Middle Aged; Radiopharmaceuticals; Tomography, Emission-Computedjournal article10.1081/CNV-120016403126430092-s2.0-0037216087