title: [Influence of occupational exposures in nonmuscle infiltration bladder cancer: preliminary results of a prospective study from October 2005 to February 2009].
abstract: Bladder cancer is a common condition in industrialized countries. If tobacco is still the main risk factor in lung cancer, occupational exposures carcinogens should not be underestimated.
  
  
  OBJECTIVE
  The significant excess of bladder cancer in the north part of France, with high manufacture concentration likely to have employees exposed to bladder carcinogens, has led us to study the influence of these exposures in the natural history of bladder cancer.
  
  
  METHODS
  We prospectively conducted a descriptive case-control study. A questionnaire was developed by the department of occupational disease and clinical, radiological, histological, therapeutic data were registered at the University Hospital of Lille. From October 2005 to February 2009, 69 patients were included in the study, 37 exposed to occupational carcinogens and 32 in the control group.
  
  
  RESULTS
  Mean age was 61.6 years vs. 61.8 years and the sex ratio of 7.33 men to one woman vs. one woman for three men respectively in the two groups. The average age of patients exposed to polycyclic aromatic hydrocarbons was 59.7 years. Smokers were 86.5% and 87.5% respectively. Follow-up was 38.4 and 32.9 months respectively. Nonmuscle invasive bladder cancer were more frequent (P=0.019) in the exposed group (84.4%) than in the unexposed group (67.8%) even after adjustment for smoking (P=0.0142). The histological type, grade, presence of CIS, the early recurrence at 3 months, the number of lesions at diagnosis does not differ in the two groups even after adjustment for smoking or after subgroup analysis of the most frequent exposure. The exposure to polycyclic aromatic hydrocarbons (62%) and aromatic amines (37.8%) were the most represented. Of 37 patients, 13 (35%) were making a statement as an occupational disease (eight according to Table 15 ter, two according to Table 16 bis and two presented to IRB). To date one single patient is recognized as an occupational disease.
  
  
  CONCLUSIONS
  We did not observe any worsening of the prognosis of bladder cancer following occupational carcinogen exposure except for the mean age at diagnosis. The small size of the population studied and the importance of smoking partner have hampered the analysis of occupational exposures.
authors.affiliation: Service d'urologie, Lille cedex, France. pecouxfrancois@yahoo.fr
authors.forename: F
authors.initials: F
authors.lastname: Pecoux
authors.forename: J-C
authors.initials: JC
authors.lastname: Fantoni
authors.forename: N
authors.initials: N
authors.lastname: Berthon
authors.forename: N
authors.initials: N
authors.lastname: Lepage
authors.forename: A
authors.initials: A
authors.lastname: Sobaszek
authors.forename: N
authors.initials: N
authors.lastname: Sebbane
authors.forename: P
authors.initials: P
authors.lastname: Devos
authors.forename: J
authors.initials: J
authors.lastname: Biserte
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D016022:Case-Control Studies; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009784:Occupational Diseases / Q000139:chemically induced* / Q000453:epidemiology; D016273:Occupational Exposure / Q000009:adverse effects*; D011446:Prospective Studies; D013997:Time Factors; D001749:Urinary Bladder Neoplasms / Q000139:chemically induced* / Q000453:epidemiology / Q000473:pathology