Background and Full QH Bars 7 inch Youth objective 18F-FDG PET/CT has several shortcomings in discriminating between lung carcinoma and pulmonary benign lesions.The aims of the present study is to explore the value of extra-lung lesions on 18F-FDG PET/CT image in the diagnosis of lung cancer.Methods A total of 126 suspected lung cancer patients underwent 18F-FDG PET/CT scan.
Preliminary diagnoses were based on the PET characteristics, SUVmean value, and CT characteristics of the lesions in the lung, and the diagnoses were modified based on the detected extra-lung lesions.The difference between the two methods and their disparity were calculated.Results Extra-lung lesions were identified on the PET/CT image in 81 patients; extra-lung Priority Processing metastasis modified 13 probable malignancies to affirmative malignancy and 1 probable malignancy to benign lesion.
Non-metastasis modified 2 probable malignancies to affirmative malignancy and 1 probable malignancy to benign lesion.Fifteen were correct, whereas 2 were misdiagnosed.The diagnoses modification rate was 13.
5% (17/126), and the modified diagnoses accuracy is 88.2% (15/17).Conclusion Extra-lung lesions demonstrated on 18F-FDG PET/CT improved the diagnostic accuracy of lung cancer.
Tuberculosis was identified as the most important reason for false positive diagnoses after modification by extra-lung lesions.