Retroperitoneal SpaceRetroperitoneal NeoplasmsRetroperitoneal FibrosisLiposarcomaTesticular NeoplasmsNeoplasms, Germ Cell and EmbryonalTomography, X-Ray ComputedLymph Node ExcisionLaparoscopyGanglioneuromaUreteral ObstructionSarcomaNeurilemmomaLaparotomyHematomaGerminomaAbdominal AbscessLeiomyosarcomaVena Cava, InferiorTeratomaAbdominal NeoplasmsOrgan Sparing TreatmentsDuodenal ObstructionTreatment OutcomeSeminomaNephrectomyCystadenoma, MucinousAortic Aneurysm, AbdominalIliac ArteryHerniaHydronephrosisAbdomenLymphoceleHemoperitoneumChylous AscitesCystadenocarcinoma, MucinousUreterUrologic Surgical ProceduresRadiography, AbdominalRetrospective StudiesParaganglioma, Extra-AdrenalAorta, AbdominalAortitisAdrenal Gland NeoplasmsPergolideNeoplasm Recurrence, LocalPelvic NeoplasmsPancreaticoduodenectomyFollow-Up StudiesVideo-Assisted SurgeryPostoperative ComplicationsParagangliomaHistiocytoma, Malignant FibrousAbdominal PainAbdominal InjuriesFemoral NeuropathyPelvisLaparoscopesLymphatic MetastasisAbscessOrchiectomyPancreatitis, Acute NecrotizingAortic DiseasesKidney NeoplasmsHemostasis, SurgicalPanniculitis, PeritonealPeritoneumFatal OutcomeGiant Lymph Node HyperplasiaVascular NeoplasmsAdipose TissueCeliac ArteryBronchogenic CystLipomaDysgerminomaMediastinal DiseasesBlood Vessel Prosthesis ImplantationKidney PelvisSurgical Procedures, Minimally InvasivePancreatitisCystsSkull Fracture, DepressedUrographyMyxosarcomaPsoas MusclesLymphangiomyomaIliac VeinPsoas AbscessVascular Surgical ProceduresColon, DescendingBlood Loss, SurgicalAngiomyolipomaChoristomaAmpulla of VaterCombined Modality TherapyRetroviruses, SimianOperative TimeSoft Tissue NeoplasmsEntomophthoralesPrednisolone