The earliest congenital anomaly identified by ultrasound is:
Ans. (d) AnencephalyRef.: Nelson 18th ed./Ch. 592.6* Anencephaly is absence of cranial vault posteriorly with brain and meninges exposed.This condition can be detected by antenatal USG as early as 11-12 weeks.
Hydrocephalus
Encephalocele
Spina bifida
Anencephaly
Genetic Approach to Pediatric Medicine