Solitary Pulmonary Cavities: CT Diagnosis And Differential Diagnosis

Objective: To study the CT Features and its differential Diagnosis of lung cavities and nodules with different pathology. Materials and Methods: To investigate 98 pulmonary cavities and 59 nodules (diameter ≤ 4cm) which collected randomly. All cases were comfirmed by operation and biopsy pathology. Of all the 98 cavities cases, there were lung abscess (17 cases), tuberculosis (30 cases) , pulmonary mycosis (3cases), primary lung cancer (37). Of all the 59pulmonary nodules,36 were primary lung cancer, other were benign nodules , including tuberculosis , metastatis and organized pneumonia . CT scaning with Simense Samotom plus' s and Marconi Mx8000 multi-slice service.All the cases with CT plain scaning , while most of them with constrast enhancement. After chest X-ray photography and CT scan , focusing on the site which the disease located with thin-slice scanning . To analyse the size, shape border, density and location . Measuring the cavies' s size and CT value' s changes before and after contrast enhancement . All patients were classified into different groups by the pathology . To compare the data which had been measuredand statistic them with t and X2 test.Results: There were no statistically significant differences between different groups in the occur rates of the cavities border, and its contents (p>0.05). Eccentric cavities were occurred in the primary lung masses with 70% and significant differences compared to other groups (p<0. 05). In the thickness and CT value group of cavities, very significant differences appeared between primary lung cavities and other groups. (p<0.01) There was difference of punctate lucency and multi-punctate ratio between benign and small cavities or irregular lucency between benign and malignant nodules.Conclusion: CD There was not any value for the location, size , shape and changes around the cavities to the diagnosis and differential diagnosis between benign and malignant cavities. The cavities eccentric or not, the thickness and the number of CT Value growth before and after contrast medium have important value to different the benign and malignant pulmonary cavity. ?Solitary and free nodules in the cavities were mostly found in the lung mycosis cavities were mostly found in the lung mycosis cavities. (3) Punctate and multi-punctate lucency shadow in pulmonarynodules predict malignant nodules. ?The mechanism of pulmonary cavities and similar cavity imformed including: pulmonary necrosis, pulmonary mass necrosis and imcomplete erosion of pulmonary parenchyma by the diseases.