Occupational risk of bladder cancer among Iranian male workers.
BACKGROUND
Approximately 5-10% of human cancers are thought to be caused by occupational exposure to carcinogens. Compare to other cancers, bladder cancer is most strongly linked to occupational exposure to chemical toxins. This study has been performed to understand which occupations and exposures are related to bladder cancer in Iran.


METHODS
This study is a case-control study which is conducted on cases with bladder cancer (160 cases) diagnosed in Baharlou hospital in 2007-2009. One hundred sixty cases without any occupational exposure were considered as controls matched for demographic characteristics. Demographic data and characteristics of occupation were compared.


RESULTS
Mean age of cases and controls were 63.7 and 64 years, respectively (P = 0.841). History of urinary tract stone had significantly difference in two groups (P = 0.039). Occupations such as bus and truck driving, road and asphalt making, mechanics, working in refinery and Petrochemical, plastic, metal manufactory, welding, and pipeline founded a higher risk for bladder cancer rather than controls.


CONCLUSIONS
Our findings on Iranian workers are concurrent and compatible with findings of previous reports about occupational and environmental risk factors of bladder cancer. Although our study population was.
Tehran University of Medical Sciences, Tehran, Iran.
Omid
O
Aminian
Chemical Injuries Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran.
Amin
A
Saburi
Department of Occupational Medicine, Kerman University of Medical Sciences, Kerman, Iran.
Hossein
H
Mohseni
Department of Occupational Medicine, Health Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran.
Hamed
H
Akbari
Department of Occupational Medicine, Health Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran.
Farzaneh
F
Chavoshi
Department of Occupational Medicine, Health Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran.
Hesam
H
Akbari
Bladder cancer; occupation; risk factors