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What is Posterior marking on Ba column in Ba swallow study is caused by? and explain in detail?
C i.e. Aberrant right subclan aery An aberrant right subclan aery arises from the aoic arch distal to the origin of left subclan aery, and passes upwards & to the right behind the oesophagus. This gives rise to a classical smooth, oblique indentation on posterior wall of barium filled oesophagusQ.