Abstract
Objective: To evaluate the application value of 18F-FDG PET/CT combined with HRCT in diagnosing pneumonia type of bronchioloalveolar carcinoma(PTBAC). Materials and Methods: The 18F-FDG PET/CT images of 26 cases with pathologically confirmed PTBAC were studied. Fifteen of the 26 cases were followed up after 0~3 days by HRCT study. The diagnostic accuracy rate of 18F-FDG PET/CT combined with HRCT were analyzed. Results: According to 18F-FDG PET/CT imaging, definite diagnosis of malignant was made in 9 cases, no exclusion of malignancies in 13 cases, and definite diagnosis of pulmonary inflammation in 4 cases. The diagnostic accuracy rate of 18F-FDG PET/CT imaging was 34.6%. The misdiagnosis rate of 18F-FDG PET/CT was higher. Associating 18F-FDG PET/CT with HRCT, 13 of 15 cases were diagnosed as malignant tumors. Pulmonary inflammation was diagnosed firstly in 1 case by PET/CT, and then definite diagnosis of malignancy was confirmed by HRCT. In addition, the other one case of malignant tumor was analyzed as pulmonary inflammation by PET/CT and HRCT. However, 18F-FDG PET/CT displayed metastasis during the delay scanning, which was approved by pathology. Based on 18F-FDG PET/CT and HRCT results, 15 cases were diagnosed correctly. Conclusion: PTBAC displays a variety of characteristics in 18F-FDG PET/CT and HRCT. Combining 18F-FDG PET/CT with HRCT is reasonable and practicable for PTBAC diagnosis, which may be due to the synergistic effect on diagnosing PTBAC and can greatly improve the diagnostic accuracy.
Key words
Adenocarcinoma /
bronchiolo-alveolar /
Fluorodeoxyglucose F18 /
Positron-emission tomography /
Tomography /
spiral computed
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PENG Liao-he;DING Jiu-rong;HU Xiao-yan;QIU Da-sheng;LI Jie;ZHOU Jing;ZHU Jia.
Application of 18F-FDG PET/CT combined with HRCT in diagnosing pneumonia type of bronchioloalveolar carcinoma[J]. Journal of China Clinic Medical Imaging. 2012, 23(10): 695-698
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