LeucovorinFluorouracilAntineoplastic Combined Chemotherapy ProtocolsOrganoplatinum CompoundsAntimetabolites, AntineoplasticColorectal NeoplasmsCamptothecinDrug Administration ScheduleAntidotesUracilInfusions, IntravenousMethotrexateTegafurTrimetrexateThymidylate SynthaseAdenocarcinomaDihydrouracil Dehydrogenase (NADP)FloxuridineCisplatinLevamisoleColonic NeoplasmsTreatment OutcomeChemotherapy, AdjuvantSurvival AnalysisLevoleucovorinDisease-Free SurvivalNeoplasm MetastasisChronotherapyTetrahydrofolatesRectal NeoplasmsCombined Modality TherapyFluorodeoxyuridylateStomatitisStomach NeoplasmsInfusions, Intra-ArterialEpirubicinSurvival RateInjections, IntravenousNeutropeniaDeoxycytidineAminopterinAdministration, OralDose-Response Relationship, DrugNeoplasm StagingCyclophosphamideLiver NeoplasmsDiarrheaMitomycinAntineoplastic AgentsDoxorubicinFolic Acid AntagonistsMaximum Tolerated DoseLeukopeniaDrug EvaluationNauseaHepatic ArteryLeukemia L1210Neoadjuvant TherapyPteroylpolyglutamic AcidsAntibodies, Monoclonal, HumanizedNeoplasm Recurrence, LocalDrug SynergismHead and Neck NeoplasmsAntimetabolitesGastrointestinal NeoplasmsPhosphoribosyl PyrophosphateTaxoidsPhosphonoacetic AcidSemustineBreast NeoplasmsPancreatic NeoplasmsDrug Resistance, NeoplasmEsophageal NeoplasmsVitamin B ComplexCarcinoma, Squamous CellTime FactorsDisease ProgressionOxonic AcidBiliary Tract NeoplasmsInterferon-alphaSalvage TherapyThrombocytopeniaRemission InductionThiophenesAntineoplastic Agents, PhytogenicPolyglutamic AcidEsophagogastric JunctionAgranulocytosisNeoplasmsProspective StudiesQuinazolinesDrug CombinationsDrug InteractionsPrognosisPaclitaxelRadiotherapy, AdjuvantBromouracilVomiting, AnticipatoryCarcinomaFollow-Up Studies