Topçu F, Bayram H, Simşek M, Kaya K, Ozcan C, Işik R, Senyiğit A
Department of Chest Diseases, Faculty of Medicine, University of Dicle, Diyarbakir, Turkey.
Respiration. 2000;67(2):139-45. doi: 10.1159/000029501.
Although all parts of the lung can be affected as a consequence of asbestos exposure, most CT protocols tend to scan only the middle and lower parts of the thorax. The aim of this study was to investigate parenchymal and pleural lesions of persons exposed to environmental asbestos, using a high-resolution computed tomography (HRCT) protocol scanning the whole thorax.
We analyzed the chest radiographs and HRCT scans of 26 patients who presented bilaterally with multiple pleural plaques related to environmental asbestos exposure.
Twenty-four cases (92%) had an abnormal HRCT suggestive of asbestosis. Apart from common HRCT changes related to asbestosis, we detected apical pleural thickening (APT) in 9 cases as well as a coarse honeycomb pattern adjacent to APT in 7 of these cases. Cavitary lesions due to pulmonary tuberculosis were observed on HRCT scans from 4 patients in total. Neither apical pulmonary fibrosis nor cavitary lesions were visible on chest radiographs.
We suggest that the HRCT protocol for examining asbestos-exposed individuals with pleural plaques on chest X-rays should include the whole thorax, since the asbestos-related pathologies may involve all parts of the lung.
尽管肺部的所有部位都可能因接触石棉而受到影响,但大多数CT检查方案往往只扫描胸部的中下部。本研究的目的是使用扫描整个胸部的高分辨率计算机断层扫描(HRCT)方案,调查环境石棉暴露者的肺实质和胸膜病变。
我们分析了26例双侧出现与环境石棉暴露相关的多发性胸膜斑的患者的胸部X光片和HRCT扫描结果。
24例(92%)患者的HRCT异常,提示石棉肺。除了与石棉肺相关的常见HRCT改变外,我们在9例患者中检测到尖部胸膜增厚(APT),其中7例在APT附近检测到粗蜂窝状改变。总共4例患者的HRCT扫描显示有肺结核引起的空洞性病变。胸部X光片上未见尖部肺纤维化和空洞性病变。
我们建议,对于胸部X光片上有胸膜斑的石棉暴露个体,HRCT检查方案应包括整个胸部,因为与石棉相关的病变可能累及肺部的所有部位。