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Male infertility is present in 50% of couple infertility. Diagnosis of infertility requires methodical and rigorous approach based upon knowledge of the pathophysiology and the causes of infertility.

Although the objective of the urologist is to correct the factors of male infertility and to favour natural procreation, the strategy must consider also the couple and the female aspects of infertility. Some types of male infertility require specific treatment. In severe cases, recent advances in medical assistance to procreation have changed the prognosis of male infertility. Pregnancy can be obtained by the means of gamet manipulation and spermatozoid selection. Nevertheless, such techniques expose to genetic disorders transmission. Subsequently, genetic assessment is required during male infertility management, especially for difficult cases.

The diagnosis of male infertility requires methodical approach which is primarily clinical, aimed at identifying all potential factors. Biological and radiological assessments allow diagnosis confirmation, and evaluation of both prognosis and therapeutic strategy.

Male infertility is present in 50% of couple infertility. Diagnosis of infertility requires methodical and rigorous approach based upon knowledge of the pathophysiology and the causes of infertility.

Although the objective of the urologist is to correct the factors of male infertility and to favour natural procreation, the strategy must consider also the couple and the female aspects of infertility. Some types of male infertility require specific treatment. In severe cases, recent advances in medical assistance to procreation have changed the prognosis of male infertility. Pregnancy can be obtained by the means of gamet manipulation and spermatozoid selection. Nevertheless, such techniques expose to genetic disorders transmission. Subsequently, genetic assessment is required during male infertility management, especially for difficult cases.

The diagnosis of male infertility requires methodical approach which is primarily clinical, aimed at identifying all potential factors. Biological and radiological assessments allow diagnosis confirmation, and evaluation of both prognosis and therapeutic strategy.

We report a case of nested cell carcinoma, an uncommon transitional tumor. These tumors are composed of regular cuboidal transitional cells forming small nests with minimal cytologic atypia. Despite the benign course, this tumor resembling proliferation of Brunn's nests or inverted papilloma, must be considered as an aggressive transitional tumor. Thus, morphologic criteria are needed to make the diagnosis. Because of its aggressive behaviour, the surgical therapy depends on the tumor's infiltration.