Table 4. Frequency of abnormal sonographic findings (numbers of fetuses) (%).
| Ultrasound findings | Total | Number of cytogenetic abnormalities | (%) | |
| Abnormal karyotype | Abnormal CMA | |||
| Multiple malformations | 46 | 6 | 4 | 21.7 |
| Lymphatic or effusion | 21 | 0 | 4 | 19.0 |
| Urogenital system | 59 | 1 | 8 | 15.3 |
| Skeletal system | 29 | 1 | 2 | 10.3 |
| Central nervous system | 177 | 3 | 15 | 10.2 |
| Cardiovascular system | 123 | 1 | 11 | 9.8 |
| FGR | 120 | 4 | 6 | 8.3 |
| Ultrasound soft markers | 121 | 4 | 6 | 8.3 |
| Digestive system | 25 | 0 | 0 | 0 |
| Respiratory system | 13 | 0 | 0 | 0 |
| Craniofacial region | 8 | 0 | 0 | 0 |
FGR: fetal growth restriction; CMA:chromosomal microarray analysis.