Xie Min
Department of Radiology, Second People's Hospital of Wuxi, Wuxi, P.R. China.
Iran J Radiol. 2011 Nov;8(3):145-9. doi: 10.5812/kmp.iranjradiol.17351065.3128. Epub 2011 Nov 25.
Lung masses are often difficult to differentiate when their clinical symptoms and shapes or densities on computed tomography (CT) images are similar. However, with different pathological contents, they may appear differently on plain and enhanced CT.
To determine the value of enhanced CT for the differential diagnosis of lung masses based on the differences in radiodensity with and without enhancement.
Thirty-six patients with lung cancer, 36 with pulmonary tuberculosis (TB) and 10 with inflammatory lung pseudotumors diagnosed by CT and confirmed by pathology in our hospital were selected. The mean ± SD radiodensities of lung masses in the three groups of patients were calculated based on the results of plain and enhanced CT.
There were no significant differences in the radiodensities of the masses detected by plain CT among patients with inflammatory lung pseudotumors, TB and lung cancer (P > 0.05). However, there were significant differences (P < 0.01) between all the groups in terms of radiodensities of masses detected by enhanced CT.
The radiodensities of lung masses detected by enhanced CT could potentially be used to differentiate between lung cancer, pulmonary TB and inflammatory lung pseudotumors.
当肺部肿块的临床症状以及计算机断层扫描（CT）图像上的形态或密度相似时，往往难以鉴别。然而，由于病理成分不同，它们在CT平扫和增强扫描上的表现可能会有所不同。
根据增强前后的密度差异，确定增强CT在肺部肿块鉴别诊断中的价值。
选取我院经CT诊断并经病理证实的36例肺癌患者、36例肺结核（TB）患者和10例炎性肺假瘤患者。根据CT平扫和增强扫描结果，计算三组患者肺部肿块的平均密度±标准差。
炎性肺假瘤、TB和肺癌患者CT平扫检测到的肿块密度无显著差异（P>0.05）。然而，在增强CT检测到的肿块密度方面，所有组之间存在显著差异（P<0.01）。
增强CT检测到的肺部肿块密度可能有助于鉴别肺癌、肺结核和炎性肺假瘤。
