Rat tail appearance is seen in?
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.
Esophageal carcinoma
Gastric ulcer
Achlasia cardia
Congenital hypertrophic pyloric stenosis
G.I.T.