ABSTRACT
Objective:To explore the application value of MSCT in diagnosis of asymptomatic SPN through DR Chest Physical Examination.Methods: A retrospective analysis of 10 cases of complete image and pathological data of DR, CT, PET/CT confirmed by surgery in asymptomatic patients with SPN.Results: Solitary pulmouary nodules were diagnosed in the 10 patients with DR during chest examination. MSCT scanning indicated 8 cases of pulmonary cancers,one case of tuberculoma and one case of pulmonary inflammatory nodule. In 8 cases of pulmonary cancers, there found lobulation(7cases), spiculate(6cases), pleural invasion sign(5cases), vascular cluster sign(one case), and air-bronchogram(one case). PET/CT scanning testified 8 cases with above medium FDG uptake and 2 cases with mild FDG uptake. Surgical pathology showed 8 cases with lung adenocarcinoma,one case with tuberculoma and one case with granulomatous inflammation.The overall accurate diagnostic rate with MSCT was 100%. Tuberculosis and lung tumors in PET/CT examination showed above moderate FDG uptake, and one case of low FDG uptak was confirmed for pulmonary cancer by histopathology.Conclusion: MSCT is the most valuable imaging equipment in examination of asymptomatic SPN. Fine scanning with image post processing techniques is significant in the diagnosis of begnign and malignant asymptomatic SPN.