Spermatic Cord TorsionCryptorchidismTestisTesticular DiseasesTesticular NeoplasmsOrchitisOrchiopexyScrotumVaricoceleEpididymitisLithiasisTesticular HydroceleInfertility, MaleOrchiectomyAzoospermiaSpermatogenesisOligospermiaSperm MaturationHernia, InguinalHoloenzymesEpididymisSperm CountSpermatidsSperm MotilitySpermatozoaTestosteroneOrgan SizeSwineRats, WistarPregnancyTime FactorsMagnetic Resonance ImagingProspective Studies