Features of Beckwith-Wiedemann syndrome
| Feature | Frequency (%) |
| Macroglossia | 93 |
| Pre or postnatal growth >90th centile | 88 |
| Abdominal wall defects | 80 |
| Ear creases or pits | 76 |
| Facial naevus flammeus | 62 |
| Renal abnormalities | 59 |
| Hypoglycaemia | 50 |
| Hemihypertrophy | 24 |
| Cardiac malformation | 7 |
| Intestinal malrotation | 5 |
| Neoplasia | 4 |
| Mental retardation | 4 |