Dia - A very old book I have, "Pregnancy" by Gordon Bourne, 1975 has a
section on Hydatidiform Mole - could this be another term for Molar
Pregnancy?  He says, "Hydatidiform mole is a strange abnormality of
pregnancy in which the placental tissue alone develops in much the same way
as it does in a blighted ovum.  In h... m... however, the chorionic villi
continue to develop and multiply so that instead of producing a smaller
amount of chorionic gonadotrophin they produce an excessive quantity and
thus guarantee that the 'pregnancy' continues.  A pregnancy test will be
positive even when the urine is diluted more than 2OO times which gives some
indication of the amount of hormone being produced.  The chorionic villi
gradually become distended and cystic so that the whole uterus is filled
with a mass of tissue which resembles a bunch of small grapes.  It may first
be suspected at about the 14th to 16th week when the uterus is much larger
than it should be.  No foetal movements will be felt and a foetal heart will
not be heard."

Pamela, Zim