Second trimester ultrasounds of fetal anomalies in the head and chest

Around 18 to 20 weeks, it's possible to evaluate most anatomic structures using detailed ultrasound. For more information on using ultrasound for the detection of fetal anomalies, click here. Here are 16 ultrasounds taken in the second trimester showing anomalies in the brain/skull, face, neck, chest, and heart.

Figure 9. Second trimester holoprosencephaly

Figure 10. Second trimester cephalocele

Figure 11. Second trimester anencephaly

Figure. 12 Second trimester ventriculomegaly

Figure 13. Second trimester Dandy-Walker malformation

Figure 14. Second trimester banana sign

Figure 15. Second trimester lemon sign

Figure 16. Second trimester agenesis of the corpus callosum

Figure 17. Second trimester micrognathia

Figure 18. Second trimester cleft lip and palate

Figure 19. Second trimester bilateral (median) cleft lip

Figure 20. Second trimester left sided diaphragmatic hernia

Figure 21. Second trimester right sided diaphragmatic hernia

Figure 22. Second trimester atrial and ventricular septal cardiac defects

Figure 23. Second trimester overriding aorta in a case of tetralogy of Fallot

Figure 24. Second trimester transposition of the great vessels