Rat tail appearance is seen in?: (A) Esophageal carcinoma, (B) Gastric ulcer, (C) Achlasia cardia, (D) Congenital hypertrophic pyloric stenosis
Answer is A. Ans. is 'a' i.e., Esophageal carcinoma * A barium swallow study showing Rat tail sign i.e. narrowing of barium streak at the level of esophagus is a characteristic feature of esophageal carcinoma.