<prompt> On barium swallow the grade III esophageal varices appear as:-Mucosal folds above the carinaMucosal folds below the carinaMucosal folds at the carinaA thick band  <response>: Radiological grading of varices Grade I Straight varices seen only on inspiration Grade II Straight varices seen in all phases of respiration Grade III Touous varices in lower half of esophagus Grade IV Touous varices in entire esophagus 