title: [Trends of underline diseases of pulmonary embolism from Peking Union Medical College Hospital].
abstract: OBJECTIVE
  To highlight the understanding of pulmonary embolism(PE), and analyze the trends of underline diseases of PE from Peking Union Medical College(PUMC) Hospital in the last half century.
  
  
  METHODS
  239 cases of PE were reviewed retrospectively from 1950 to 2000 in PUMC Hospital.
  
  
  RESULTS
  In the first and second periods (1950-1982, 1983-1990), about 3 cases of PE were diagnosed annually, but in the third (1991-1997) and fourth periods (1998-2000), 8 cases and 20.6 cases of PE were found annually. The incidence of underline diseases of PE, such as deep venous thrombosis (DVT), cardiac disease, malignancy and connective tissue disease varied in different periods. The morbidity of DVT with PE was dramatically enhanced recently.
  
  
  CONCLUSIONS
  There is an increasing trend of incidence of PE in the last half century. DVT events become the most common underline disease or risk factor of PE.
authors.affiliation: Department of Respiratory Disease, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, China.
authors.forename: B
authors.initials: B
authors.lastname: Cai
authors.forename: L
authors.initials: L
authors.lastname: Xu
authors.forename: S
authors.initials: S
authors.lastname: Guo
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002681:China / Q000453:epidemiology; D005260:Female; D006785:Hospitals, University / Q000639:trends*; D006801:Humans; D008297:Male; D008875:Middle Aged; D011655:Pulmonary Embolism / Q000150:complications / Q000453:epidemiology / Q000209:etiology*; D012189:Retrospective Studies