It has been suggested that chorioangiomas should be added to the list
of causes of elevated maternal serum alpha-fetoprotein levels. We unde
rtook a review of maternal serum alpha fetoprotein levels in chorioang
iomas histologically diagnosed in our department, and a review of the
literature. Maternal serum alpha-fetoprotein level was elevated in onl
y 1 of our 11 cases of chorioangioma. To date, there have been 14 case
reports of chorioangiomas in which maternal serum alpha-fetoprotein l
evels have been recorded; 12 of these were associated with elevated ma
ternal serum alpha-fetoprotein levels. We consider that, although chor
ioangiomas may be a cause of elevated maternal serum alpha-fetoprotein
levels, it is likely to be infrequently a cause of such elevations in
our population.