ABSTRACT
A1 E Incidence of ATDs has been reported to be 1 in 4500 births with a male preponderance. Three common findings as above are seen regardless of its location.
Q2 The aetiopathogenesis of ATD includes A partial or abortive twinning B split notochord theory C persistent embryonic diverticulum D aberrant recanalisation of alimentary tract lumen E all of above.
