Here are some images showing several associated anomalies found in a fetus with trisomy 21 obtained at 20th week of pregnancy. 

Images 1, 2: The images show mild cerebral ventriculomegaly.

Images 3, 4: Hands of the fetus with brachymesophalangia and clinodactyly of the 5th digit..

Images 5, 6: Mild fetal pyelectasis.

Image 7: The nasal bone was normal.