Undescended testis (UDT) is the commonest congenital abnormality ofthe genitourinary system in young boys. Approximately 1-2% of boys atthe age of 1 year have an UDT, the disorder being unilateral in about 90%of cases and bilateral in about 10%, depending on the clinical series.About 20% of UDTs are nonpalpable. The testis may be located in theabdomen in some boys, but it might have been pushed into the upperinguinal canal: this disorder is termed ‘peeping testis ’.In about half of the cases of nonpalpable testis (NPT), a testis is locatedin the abdominal cavity; the remainder are atrophic or vanishing, eithersecondary to an antenatal torsion in utero or agenesis.Despite 15 years of international research on the topic, there are noguidelines on the management of boys with NPT. The management ofboys with this disorder is still controversial, the standard Stephen Fowlertechnique is done on two stages, but it is found that the two stage StephenFowler orchidopexy has the same successful results of the single stageStephen fowler (Poppas et al, 1996).In this study we aim to summarize the current evidence that is availableon the topic and provide the results of the Stephen Fowler technique insingle stage orchidopexy