title: [Relationship between pathological features and 64-MSCT findings of pulmonary nodules in patients with coal workers' pneumoconiosis].
abstract: OBJECTIVE
  To analyze the relationship between the pathological features and 64-multislice spiral computed tomography (64-MSCT) findings of pulmonary nodules in autopsies from patients with coal workers' pneumoconiosis (CWP), to investigate the optimal imaging method for the distribution of pulmonary nodules, and to provide data for the establishment of CT diagnostic criteria for CWP.
  
  
  METHODS
  Cadaveric lung specimens were collected from 7 CWP patients. All of them were men, aged 42∼77 years (mean, 60.00±13.00 years), and their dust exposure time was 5∼30 years (mean, 15.4±8.01 years). The cadaveric lung specimens were treated by aeration, sectioning, and immobilization and were then examined by coronary 64-MSCT. The primitive images were reconstructed into the maximumintensity projection (MIP) images (slice thickness: 3 mm, 5 mm, and 8 mm). The sensitivities of imaging methods with different slice thickness were evaluated based on the pathology and anatomy of local pulmonary nodules, and the correlation between pathological results and radiological findings was analyzed.
  
  
  RESULTS
  There were significant differences between the stages determined by pathological examination and high-kV chest radiography (before death) (χ(2) = 4.667, P < 0.05; kappa value = 0.167, P < 0.05). A total of 271 nodules were found in all pathological sections, including peribronchovascular nodules (27, 9.9%), centrilobular nodules (67, 24.6%), interlobular nodules (65, 24.3%), nodules within 5 mm from the pleura (45, 16.5%), pleural plaque-like nodules on the lateral chest wall (45, 16.5%), and nodules on the interlobar pleura (22, 8.1%). The likelihood ratio was the highest (0.981) between 5-mm MIP images and pathological results according to the chi-square test.
  
  
  CONCLUSIONS
  The stage of pulmonary nodules determined by pathological examination is significantly different from that determined by high-kV chest radiography. The 5-mm MIP images of 64-MSCT provide a good reflection of the local pathology and anatomy of pulmonary nodules in CWP patients.
authors.affiliation: Department of Radiology Coal General Hospital, Beijing 100028, China.
authors.forename: Xu
authors.initials: X
authors.lastname: Wang
authors.affiliation: E-mail: lbp00@sohu.com.
authors.forename: Baoping
authors.initials: B
authors.lastname: Li
authors.forename: Qingyu
authors.initials: Q
authors.lastname: Zeng
authors.forename: Yunzhi
authors.initials: Y
authors.lastname: Zhou
authors.forename: Xiaoming
authors.initials: X
authors.lastname: Yin
authors.forename: Maosong
authors.initials: M
authors.lastname: Deng
authors.forename: Budong
authors.initials: B
authors.lastname: Chen
authors.forename: Yansong
authors.initials: Y
authors.lastname: Zhang
authors.forename: Yi
authors.initials: Y
authors.lastname: Li
authors.forename: Xin
authors.initials: X
authors.lastname: Chang
authors.forename: Jianxin
authors.initials: J
authors.lastname: Liu
mesh_terms: D000368:Aged; D055008:Anthracosis / Q000473:pathology*; D003031:Coal; D003032:Coal Mining; D004391:Dust; D006801:Humans; D008168:Lung / Q000473:pathology*; D008297:Male; D008875:Middle Aged; D010995:Pleural Diseases / Q000473:pathology; D036542:Tomography, Spiral Computed
chemical_list: D003031:Coal; D004391:Dust