Definition
Here are some images and a video of a 24 weeks fetus with unilateral cleft lip.
Images 1, 2: 2D and 3D images showing unilateral cleft lip.

Images 3, 4: 3D images showing unilateral cleft lip.

Images 5, 6: 3D images showing unilateral cleft lip.

Video 1: 2D color Doppler showing normal flow of amniotic flow during breathing motion, with no evidence of cleft palate.