Assuntos
Neoplasias Brônquicas/diagnóstico por imagem , Bronquite/diagnóstico por imagem , Tumor Carcinoide/diagnóstico por imagem , Dispneia/diagnóstico por imagem , Adulto , Neoplasias Brônquicas/complicações , Bronquite/etiologia , Tumor Carcinoide/complicações , Dispneia/etiologia , Feminino , Humanos , Radiografia , RecidivaRESUMO
Thoracic computed tomography is now used in the assessment of occupational diseases. Coal miner's pneumoconiosis, silicosis and benign asbestosis constitute the principal indications. The specific contribution of computed tomography techniques, their methodology and their signs are presented.
Assuntos
Asbestose/diagnóstico por imagem , Carvão Mineral/efeitos adversos , Pneumoconiose/diagnóstico por imagem , Silicose/diagnóstico por imagem , Tomografia Computadorizada por Raios X/métodos , Minas de Carvão , Humanos , Atelectasia Pulmonar/diagnóstico por imagemRESUMO
We compared CT with chest radiography (CR) in the assessment of low grade coal worker's pneumoconiosis (CWP) in a population of 83 subjects. All subjects had a high-voltage p.a. CR, graded according to the ILO classification between 0/0 and 1/1, a conventional CT (CCT) using contiguous 1-cm-thick sections on the entire thorax and a set of 10 high-resolution CT (HRCT) images. CR and CT were separately read by consensus by 2 teams of 2 trained readers. CR was coded 0/0 in 9 subjects; 0/1 in 31; 1/0 in 28; 1/1 in 15. Among these groups of patients, micronodules were detected by CT in respectively 2 (22%), 14 (45%), 17 (61%) and 10 (67%) patients. In all groups, micronodules were more often detected by CT when the opacities detected on CR were scored as rounded (p, q) than irregular (s, t). Among the patients graded 0/0 or 0/1, CT showed micronodules in 40%. By contrast, among the patients graded 1/0 or 1/1, CT did not show micronodules in 37%, but revealed in numerous patients that opacities detected on CR were related to bronchiectasis and/or emphysema only. Comparative analysis of HRCT and CCT showed that both techniques are complementary and proved the usefulness of CCT in the detection or confirmation of low profusion of micronodules.