<prompt> External auditory canal atresia has been associated with all of the following except-Low Birth WeightIntrauterine infectionsIntrauterine toxinsPolyhydramnios  <response>: Ans. is d i.e., Polyhydramnios External auditory canal atresiao The precise etiology of the failure of EAC canalization is not known.o Associations have been postulated between EACA and low birth weight, intrauterine trauma, toxins, infection.o Genetic defects are being identified for several craniofacial anomalies. 