testicular cancer is the most common malignancy among young men in north america and western european countries . there are several proposed risk factors for seminoma such as cryptorchidism , klinefelter syndrome , radiofrequency waves and etc . sporadic case reports and small series suggest that this type of radiation might lead to cancer or contribute to its evolution . the association between radiofrequency and testicular damage and cancer is unproved , but clinical and experimental data are suggestive of such possibility . there are some case series and case reports about this but this relation is not proved . in this paper we have reported three cases of seminoma in person who worked in the same place that exposed to radio frequency ( rf ) waves . he was a 31-year - old man who has worked in a radio station for 6 years while he was left that place 10 years before diagnosis of seminoma . initial evaluation revealed stage 1 seminoma and he was underwent radiotherapy after radical orchiectomy and his disease free until now . he was a 37-year - old man with seminoma diagnosis after radical orchiectomy on his 25 years after 6 years work in the same place . because of stage 1 disease he received radiotherapy and it made him disease free until now . he was a testicular cancer with the same pathology , seminoma , but with inguinal metastasis . he was worked in that place for 16 years and was diagnosed for seminoma at the last one year of his job . after radical orchiectomy radiotherapy is done his response was good and he is under follow up now . their workplace was a radio station that consist multiple receiver and transmitter antennas and the frequency of waves were in the radiofrequency spectrum . the staffs worked there for 24 hours , however in their resting time for 48 hours were in that enclosure too . rapid technological progress led to increase man - made sources for radiofrequency that some of these sources are mobile communication , microwave oven , wi - fi , television , antenna , detection equipment or radio stations . radiofrequency ( rf ) radiation is at the low - energy end of the electromagnetic spectrum and is a type of radiation that has enough energy to move atoms or cause them to vibrate but not enough to ionize them so called non - ionizing radiation . although rf radiation does not cause cancer by ionizing and damaging dna in cells , there has been concern that some forms of non - ionizing radiation might have biological effects that could result in cancer in some circumstances . increased incidence of cancer in the past decades made specialist to pay attention to some environmental risk factors and one of probable risks is radiofrequency exposure . sporadic case reports and small series suggest that this type of radiation might lead to cancer or contribute to its evolution . but the association between cancer and radiofrequency is still unproved and there are some controversies . most of exist studies are about the radiofrequency and brain tumor , however seminoma report just in some series . has evaluated the biological effect of radiofrequency in vivo , they found that reactive oxygen species concentration increased within the cell caused by rf / mw radiation seems to be a biologically relevant hypothesis to give clear insight into the rf / mw action at non - thermal level of radiation . in a population - based case - control study , baumgardt - elms et al . has examined the association of testicular cancer and electromagnetic fields ( emf ) in the workplace by standardized face to face interviews in case ( n=269 ) and control ( n=797 ) groups . they concluded environmental emf exposure in the workplace does not seem to be a relevant risk factor for testicular cancer as a result of their study . has reported the result of a study about all of previous publication about microwave exposure and radiofrequency effects . possible outcomes considered included blood count changes , evidence of somatic mutation , impairment of reproductive outcomes , especially spontaneous abortion , and increase in cancer incidence . the author presented evidence that sufficient microwave exposures are associated with all four of mentioned outcomes , concluding that the possible effects and their timings with respect to exposure are qualitatively similar to those on ionizing radiation . has investigated the association between occupation and testicular cancer risk , self - reported exposure to microwaves and other such waves was associated with an increased risk for both seminomas and other germinal cell tumors . however , an assessment of radio wave exposure based on job title did not support this finding . richter et al . has described results of a case - control study exposure - effect relationship in sentinel patients and their co - workers , who were technicians with high levels of exposure to rf / mw radiation . their calculations derived from a linear model of dose - response suggest the need to prevent exposures in the range of 10 - 100 w / cm2 . occupational exposure to extremely low - frequency magnetic fields ( mf ) was studied by stenlund et al . , in 144 subjects with testicular cancer , germ cell tumor , diagnosed in 1985 - 87 . the results for testicular cancer gave some support to the hypothesis of abnormal link between mfs and cancer , and should be further explored . studies about carcinogenic effect of radiofrequency waves and the mechanism of that are limited , and most of them are case series or case control retrospective studies , it seems that we need more in vivo surveys and prospective studies to evaluate this effect .
physical agents such as ultraviolet or ionizing radiation and repetitive trauma have been related to the causation of cancer in humans . 
 much less clear is the association between exposure to radiofrequency , such as radar and microwave radiation to the development of cancer . 
 sporadic case reports and small series suggest that this type of radiation might lead to cancer or contribute to its evolution . 
 the association between radiofrequency and testicular damage and cancer is unproved , but clinical and experimental data are suggestive of such possibility . in this paper we have reported three cases of seminoma in person who worked in the same place that exposed to radio frequency ( rf ) waves .