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In boys, the testicles develop near the kidneys; they travel down to the scrotum during the end of gestation. The "pathway" they leave behind them is called the processus vaginalis; its equivalent exists in girls, with the end of the pathway being the labia. This pathway normally closes by the time of birth. If it remains open, then the contents of the abdomen may potentially also travel down through it. If abdominal fluid passes down to the scrotum, this is called a hydrocele or a communicating hydrocele; if an ovary (in a girl) or intestines are involved, this is termed a hernia.