
Cryptorchidism is the most common genital problem encountered in pediatrics, it carries the risk of testicular cancer, infertility and psychological upset. In Iraq the screening of undescended testes (UDT) after child birth is not routinely done that will cause a lot of cases remain undiagnosed till after child and adulthood. 319 primary school randomly selected all over Baghdad city including urban and rural regions for screening males with undescended testes among children aged 6-14 years. Exclusion criteria include those who are treated previously from this anomaly, and those who refused examination to inter the study. A total of 184,852 pupils aged 6-14 years were examined During year 2015(from 15 November 30 April), 3910 pupils (2.11%) were found to have undescended testes. The prevalence of cryptorchidism among our primary school children in Baghdad city is nearly 2 % in urban area and 2.4% in rural area and the result of this mass screening aware us to go forward in order to engage this problem in our early detection program for cancer prevention.