This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Poal Hypeension, Subject name: Surgery
On barium swallow the grade III esophageal varices appear as:- 
Select and explain. 
A. Mucosal folds above the carina, B. Mucosal folds below the carina, C. Mucosal folds at the carina, D. A thick band
A: Mucosal folds above the carina
Answer: A: Mucosal folds above the carina 
Explanation: 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