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Hydatidiform mole

  • Alternative Names

    Hydatid mole; Molar pregnancy


    If your doctor suspects a molar pregnancy, a suction curettage (D and C) may be performed.

    A hysterectomy may be an option for older women who do not wish to become pregnant in the future.

    After treatment, serum HCG levels will be followed. It is important to avoid pregnancy and to use a reliable contraceptive for 6 - 12 months after treatment for a molar pregnancy. This allows for accurate testing to be sure that the abnormal tissue does not return. Women who get pregnant too soon after a molar pregnancy have a greater risk of having another one.

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    Expectations (prognosis)

    More than 80% of hydatidiform moles are benign (noncancerous). The outcome after treatment is usually excellent. Close follow-up is essential. After treatment, you should use very effective contraception for at least 6 to 12 months to avoid pregnancy.

    In some cases, hydatidiform moles may develop into invasive moles. These moles may grow so far into the uterine wall and cause bleeding or other complications.

    In a few cases, a hydatidiform mole may develop into a choriocarcinoma, a fast-growing cancerous form of gestational trophoblastic disease. See: Choriocarcinoma


    Lung problems may occur after a D and C if the woman's uterus is bigger than 16 weeks gestational size.

    Other complications related to the surgery to remove a molar pregnancy include:

    • Preeclampsia
    • Thyroid problems