Saldías F, Leiva I
Departamento de Enfermedades Respiratorias, Pontificia Universidad Católica de Chile.
Rev Med Chil. 1997 Feb;125(2):174-82.
The role of chest CT scan in the assessment of patients with hemoptysis is uncertain.
To evaluate the usefulness of CT scan in patients with non massive hemoptysis.
Ninety six patients, 60 male, aged 23 to 76 years old, who presented with hemoptysis to an University Hospital, were studied. All patients were studied with a chest radiograph, a fiberoptic bronchoscopy and a high resolution CT scan.
The final causes of hemoptysis were bronchiectasis in 27 cases, bronchogenic carcinoma in 24 cases and lung infections in nine. The source of bleeding was not identified in 18 patients (19%). CT scan clarified abnormalities seen in the chest radiograph in 30 patients (31%) and provided new diagnostic information in 13 (14%). CT scan correctly localized the source of bleeding found by fiberoptic bronchoscopy in 35 of 43 patients (81%), whereas chest radiograph did so in 27 (77%). All patients with bronchogenic carcinoma were identified by chest radiograph or bronchoscopy. Twenty of the 27 patients with bronchiectasis had radiological abnormalities in the chest radiograph. In only two patients, with lung metastases and non conclusive chest radiograph and bronchoscopy, CT scan provided information that significantly modified clinical management.
CT scan was useful to stage patients with bronchogenic carcinoma and to assess the extension of bronchiectasis, but its impact in the management and clinical evolution of patients was limited. Therefore we do not recommend the routine use of CT scan in the assessment of patients with hemoptysis.
胸部CT扫描在咯血患者评估中的作用尚不确定。
评估CT扫描在非大量咯血患者中的应用价值。
对96例咯血患者进行了研究,其中男性60例,年龄23至76岁,均在一所大学医院就诊。所有患者均接受了胸部X线摄影、纤维支气管镜检查和高分辨率CT扫描。
咯血的最终病因中,支气管扩张症27例,支气管源性癌24例,肺部感染9例。18例患者(19%)未明确出血来源。CT扫描明确了胸部X线摄影中所见异常的患者有30例(31%),并提供了新的诊断信息的有13例(14%)。CT扫描正确定位了纤维支气管镜检查发现的出血源,43例患者中有35例(81%),而胸部X线摄影定位了27例(77%)。所有支气管源性癌患者均通过胸部X线摄影或支气管镜检查确诊。27例支气管扩张症患者中,20例胸部X线摄影有放射学异常。仅2例有肺转移且胸部X线摄影和支气管镜检查结果不明确的患者,CT扫描提供的信息显著改变了临床治疗方案。
CT扫描有助于对支气管源性癌患者进行分期,并评估支气管扩张症的范围,但其对患者治疗和临床病程的影响有限。因此,我们不建议在咯血患者评估中常规使用CT扫描。