Abstract:

Objective To explore the features of chest CT in patients with pneumoconiosis complicated with pulmonary tuberculosis.Methods We analyzed retrospectively the clinical and CT data from 96 cases of pneumoconiosis complicated with pulmonary tuberculosis admitted in Chongqing Infectious Disease Medical Center from June 2015 to December 2016. The location, scope, morphology, type and other organ tuberculosis were observed.Results Of 96 cases, there were pneumoconiosis stage Ⅰ in one case, stage Ⅱ in 23 cases and stage Ⅲ in 72 cases. Pulmonary lesions involved multiple lobes in cases and located at the apicoposterior segment in 93 (96.9%) cases, at the anterior segment in 48 (50.0%) cases, at the middle lobe or/and lingula lobe in 49 (51.0%) cases, at the apical segment of lower lobe in 68 (70.8%) cases and at the basal segment in 53 (55.2%) cases. Of 96 cases, the pathological morphology were patch shadow in 85 (88.5%) cases, large patch shadow in 48 (50.0%) cases, cavity in 64 (66.7%) cases including multiple cavities in 43 cases (67.2%, 43/64), tree-in-bud in 56 (58.3%) cases, pleural effusion in 36 (37.5%) cases, pleural thickening in 72 (75.0%) cases, mediastinal lymph node enlargement in 85 (88.5%) cases, mediastinal lymph node calcification in 58 (60.4%) cases. The incidence of thin-wall cavity in patients with stage Ⅱ pneumoconiosis (47.8%,11/23) was higher than that in patients with stage Ⅲ pneumoconiosis (15.3%,11/72) (χ ²=10.378,P<0.05). The incidence of large patch (59.7%,43/72), tree-in-bud (69.4%,50/72), thick wall cavity (56.9%,41/72), pleural thickening (83.3%,60/72), mediastinal lymph node enlargement (93.1%,67/72) and calcification (69.4%, 50/72) in patients with stage Ⅲ pneumoconiosis were higher than those ((21.7%,5/23),(26.1%,6/23),(8.7%,2/23),(52.2%,12/23),(78.3%,18/23),(34.8%,8/23)) in patients with stage Ⅱ pneumoconiosis, respectively (χ ²=10.061,13.541,14.489,9.224,4.051 and 8.808,P<0.05 for each). Conclusion CT findings of the patients with pulmonary tuberculosis complicated with different stages pneumoconiosis is certain specificity with multiple cavities, tree-in-bud, pleural effusion and extrapulmonary tuberculosis.

Key words: Pneumoconiosis, Tuberculosis, pulmonary, Comorbidity, Tomography, X-ray computed, Disease attributes, Diagnostic imaging