Respondent | Isolated ventriculomegaly 10–12 mm | Posterior fossa abnormality (not Dandy-Walker abnormality) | |||
Isolated hypoplasia of the cerebellar vermis | Unilateral hypoplasia of the cerebellar hemisphere | Isolated cisterna magna | Isolated Blake’s pouch cyst | ||
1 | No reply | I would not give good outcome—would be cautious: defects may be mild but delay likely | I would not give good outcome—would be cautious: likely deficit but not as marked unless inferior vermis is involved | Very good outcome | Very good outcome |
2 | 95% | Do not know | Do not know | >95% | Unknown |
3 | No reply | 50% | 80% | 95% | 90% |
4 | 90% | 80% | 60%–70% | >95% | 90% |
5 | 90% | 50% | 50% | 95% | 99% |
6 | 95% | Worrying | Excellent | Excellent | Good |
7 | 90% | 95% | 70% | 95% | 95% |
8 | 90% | No reply* | No reply* | No reply* | No reply* |
9 | 95% | 80%–90% | Not sure: carries a variable outcome from normal to developmental impairment | 80%–90% | 50% |
10 | 95% | 80% | 75% | 90% | 95% |
11 | 90% | 30% | 10% | 90% | 90% |
12 | No reply | 75% | 50% | 99% | No reply |
13 | 95% if resolves, 90% of persists | 90% | 90% | 97% | 97% |
14 | 90% | 75%–80% | 40%–50% | 90%–95% | 90%–95% |
*Responders indicated they would not give a figure, but would refer for further advice to another fetomaternal unit.