Table 1 Common sonographic defects in aneuploides fetuses
|  | Trisomy 21 (n = 31) | Trisomy 18 (n = 21) | Trisomy 13 (n = 3) |
|---|---|---|---|
1rst trimester | Â | Â | Â |
Cystic hygromata | 2 | 3 | 0 |
Enlarged NT (≥3.5 mm) | 14 | 9 | 0 |
Hydrops | 0 | 1 | 0 |
Cardiac abnormalities | 0 | 2 | 1 |
Encephalocele | 0 | 2 | 0 |
Spina bifida | 0 | 2 | 0 |
Exomphalos | 0 | 5 | 1 |
2d and 3d trimester | Â | Â | Â |
Choroid plexus cysts | 1 | 2 | 0 |
Other brain abnormalities | 1 | 0 | 1 |
Skull and face abnormalities | 1 | 1 | 0 |
Cardiac abnormalities | 3 | 2 | 1 |
Digestive atresia | 1 | 1 | 0 |
Hepatic calcifications | 1 | 0 | 0 |
Renal abnormalities | 0 | 1 | 0 |
Ascite | 0 | 1 | 0 |
Extremities abormalities | 1 | 1 | 1 |
Short femur | 1 | 1 | 0 |
Macrosomia or hypotrophia | 1 | 1 | 0 |
Fetal death | 0 | 1 | 0 |
Decrease or increased amniotic fluid volume | 4 | 2 | 1 |