Risk factor for bladder carcinoma is –
Correct Answer: Schistosoma hematobium
Description: Ans. is 'b' i.e., Schistosoma hematobium Risk factors for ca of BladderCigarette smoking is the main etiological factor and accounts for about 50% of bladder cancers.Occupational exposures to chemicalso The following compounds mav be carcinogenic # 2 naphthylamine-combustion gases and soot from coal# 4-aminobiphenyl-chlorinated aliphatic hydrocarbons# 4-nitrobiphenyl-certain aldehydes such as acrolein# 4-4-diaminobiphenyl (benzidine)-aniline dyes# 2-ami- 1-naphthol o Occupation reported to be associated with increased risk of bladder cancer# Autoworkers-metal workers# Painters-textile worker# Truck drivers-dye workers# Drill press operator-petrol workers# Leather workers-rodent exterminators & sevage workersSchistosoma haemotobium - Its a risk factor for both transitional cell ca & squamous cell ca.Drugs such as phenacetin & chlornaphazineCyclophosphamide therapyPelvic irradiationo Vitamin A supplements appear to be protective.
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