A member asked:

What causes molar pregnancies?

A doctor has provided 1 answer

Abnormal pregnancy: Molar pregnancies are when the placenta overgrows and takes over. There may or may not be a fetus or embryo present. They are caused by abnormal genetics. Normally the sperm contributes half the genetic material. If the sperm contributes most or all of it, a molar pregnancy occurs.

Answered 4/26/2014

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