Table 2.

Contribution of autopsy in 132 cases of termination of pregnancy due to structural anomalies detected at scan with no evidence for abnormal karyotype and autopsy performed

Category	Contribution of autopsy	No (%) of cases	Example
1	Prenatal diagnosis confirmed; scan and autopsy findings identical	72 (55%)	Scan=isolated anencephaly; autopsy=isolated anencephaly
2	Prenatal diagnosis confirmed; autopsy added some information which did not change recurrence risk	23 (17%)	Scan=anencephaly; autopsy =anencephaly + unilateral renal agenesis
3a	Autopsy added information that reduced estimate of recurrence risk	17 (13%)	Scan=anencephaly; autopsy =amniotic band
3b	Autopsy added information that increased estimate of recurrence risk	18 (14%)	Scan=cystic kidneys; autopsy =infantile polycystic kidney disease
4	Other (see text)	2 (2%)