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Molar Pregnancy


Hydatidiform mole or molar pregnancy is an abnormal pregnancy due to a mass of tissue forming abnormal placenta within the uterus.

Causes are related to problems during fertilization and possibilities include:

  • Fertilization of an abnormal egg with no genetic information
  • Fertilization of a normal egg by two sperms


  • Vaginal bleeding during early pregnancy
  • Enlarged uterus or ovaries
  • Excessive vomiting
  • High blood pressure
  • Signs of hyperthyroidism


  • Suction dilation and curettage (D and C) to remove the abnormal growth
  • Hysterectomy to surgically remove the uterus
  • Chemotherapy or radiation therapy in case of cancerous growths

There is no way to prevent molar pregnancy but risk can be reduced by:

  • Avoiding pregnancy before 20 and after 40 years of age
  • Avoiding nutritional deficiencies