<prompt> A routine ultrasound done at 20 weeks period of gestation done in a 31 years old gravida 1 para 0 revealed an anomaly. The patient comes to you with the following ultrasound film for a second opinion. What congenital anomaly would you explain to the couple?OmphaloceleEncephaloceleCystic hygromaAnencephaly  <response>: Ans. is d, i.e. AnencephalyRef. Williams 24e, p 201The ultrasound appearance absence of cranial vault and varying amount of brain is classically seen in anencephaly of fetus. 