CT diagnosis and application value of pulmonary ground glass nodules

Objective To explore the value of CT in the diagnosis of pulmonary ground glass nodules. Methods A total of 256 patients with ground-glass CT findings from June 2015 to June 2019 were enrolled in the First Hospital of Shijiazhuang.The imaging data of 241 patients with pulmonary ground glass nodules were analyzed, and 134 cases were compared. Invasive adenocarcinoma (IAC), 76 cases of microinvasive adenocarcinoma (MIA), 31 lesions in patients with pre-invasive lesions, size, volume, solid components and CT signs. Results There were significant differences in the size, volume and solid components between the IAC, MIA and pre-invasive lesions (F=5.246 2, 4.156 2, 4.170 8, all P<0.05). There were statistically significant differences in the CT signs of lobes, burrs, and pleural indentations between the IAC, MIA, and pre-invasive lesions (F=6.157 8, 4.258 7, 7.152 4, all P<0.05); According to the degree of infiltration, it was divided into infiltration group (IAC) and no or micro infiltration group (MIA and pre-invasive lesions). There were significant differences in lesion size, lesion volume and solid components (t=7.577 0, 8.768 5, 6.603 9, P<0.05), there was a significant difference in the proportion of lobulated sign, burr sign, vacuole sign, and pleural indentation (χ2=54.740 6, 31.234 8, 4.846 9, 56.099 6, all P<0.05). Conclusions The size, volume, solid components and CT signs of lung-grinding glass nodules can provide accurate information for the differential diagnosis of different pathological types, through clear diagnosis and effective corresponding treatment, lung cancer patients can also promote the survival rate. Key words: Pulmonary ground glass nodules; CT; Clinical diagnosis