Lead RadioisotopesPeritoneal NeoplasmsPeritoneal DiseasesNeoplasm StagingTomography, X-Ray ComputedEndosonographyTunica IntimaLymphatic MetastasisFluorodeoxyglucose F18Positron-Emission TomographyPrognosisRadiopharmaceuticalsMagnetic Resonance ImagingSensitivity and SpecificityImage EnhancementLymph NodesRetrospective StudiesContrast MediaMediastinoscopyMediastinumTime FactorsPredictive Value of TestsReproducibility of ResultsPleural DiseasesLung NeoplasmsLymph Node ExcisionProspective StudiesCarotid ArteriesTunica MediaSentinel Lymph Node BiopsyAdenocarcinomaGadolinium DTPAMultimodal ImagingBiopsyPreoperative CareTreatment OutcomeTomography, Emission-Computed