The incidence of testicular cancer is highest in North-European and least in Asians and Africans. Cryptorchidism, or failure of descent of the testis into the scrotal sac, is also a risk factor for the disease.
In this condition, testis may lie either in the abdomen or in the inguinal canal, as you can see in the figure. Various syndromes such as Down’s syndrome. Klinefelter’s syndrome and testicular dysgenesis syndrome may also be a risk factor for the disease.
Previous history of cancer in the opposite testis, previous testicular biopsy, testicular atrophy or impaired fertility also increase the testicular cancer risk factor.
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