SclerotherapySclerosing SolutionsSodium Tetradecyl SulfateVaricose VeinsUltrasonography, InterventionalStockings, CompressionSaphenous VeinVenous InsufficiencyFoam CellsSodium MorrhuateVascular MalformationsEsophageal and Gastric VaricesUltrasonography, Doppler, DuplexVaricose UlcerGastrointestinal HemorrhageEndoscopic Ultrasound-Guided Fine Needle AspirationTreatment OutcomeBiopsy, NeedleEndosonographyUltrasound, High-Intensity Focused, TransrectalFemoral VeinLigationImage-Guided BiopsyLaser TherapyPolyethylene GlycolsUltrasonicsBiopsy, Fine-NeedleUltrasonographyProspective StudiesVascular Surgical ProceduresInjections, IntralesionalRecurrenceCatheterization, Peripheral