A 7.5-year-old boy was admitted to our department with left undescended testis. On surgical exploration, the vas deferens and epididymis were normal in appearance in its route to the scrotum, but no obvious testis or testis-like structure was identified. Exploration was extended to the abdominal cavity via the processus vaginalis, and the testis was found near the sigmoid colon without any connection to the vas deferens and epididymis. The testis was freed from surrounding structures preserving the testicular vasculature, and an orchidopexy was performed. In cases of nonpalpable testis with the vas deferens and epididymis reaching to the scrotum, an intra-abdominal testis owing to a nonunion phenomenon must be considered, and extended exploration should be performed.
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