title: [Bone mineral density changes in coal workers' pneumoconiosis in Two and Triple stages with increasing ages].
abstract: OBJECTIVE
  To observe the bone mineral density changes in coal workers' pneumoconiosis in Two and Triple stages with increasing ages.
  
  
  METHODS
  Chose 70 cases of coal workers pneumoconiosis in Two and Triple stages in Jincheng Coal Mining Group, all of workers were male, of 55-years old-80 years old, an average of 67 years old. 10 years of ages to grouping, whole body bone mineral densities were measured by body dual-energy X-ray absorptiometry. We analyzed the BMD changes bone loss, osteoporosis occurrence.
  
  
  RESULTS
  Chest bone, pelvis, spine bone mineral densities of coal workers pneumoconiosis in Two and Triple stages were significantly decreased. We found that the rate of Pelvic BMD decline of coal workers' pneumoconiosis patients in Two stage was significantly faster after 65 years of age. In Different age groups of coal workers' pneumoconiosis patients in Two and Triple stages, incidence of bone loss and osteoporosis were significantly increased.
  
  
  CONCLUSIONS
  With the age increasing, Coal workers' pneumoconiosis in Two and Triple stages significantly accelerated the speed of the rate of BMD decline. This phenomenon was most obvious in the chest bone, pelvis, and spine.
authors.affiliation: Department of Radiology, General Hospital of Jincheng Coal Industry Group 048006, China. lihaixue800@sina.com
authors.forename: Hai-xue
authors.initials: HX
authors.lastname: Li
authors.forename: Peng-yong
authors.initials: PY
authors.lastname: Zhai
authors.forename: Jin-feng
authors.initials: JF
authors.lastname: Yan
mesh_terms: D000367:Age Factors; D000368:Aged; D000369:Aged, 80 and over; D055008:Anthracosis / Q000453:epidemiology / Q000378:metabolism* / Q000473:pathology*; D015519:Bone Density; D016022:Case-Control Studies; D003032:Coal Mining; D006801:Humans; D008297:Male; D008875:Middle Aged