What is the global incidence of hydatidiform mole?

Updated: Feb 16, 2018
  • Author: Lisa E Moore, MD, MS, FACOG, RDMS; Chief Editor: Warner K Huh, MD  more...
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The reported frequency of hydatidiform mole varies greatly. Some of this variability can be explained by differences in methodology (eg, single hospital vs population studies, identification of cases). The reported frequencies range from 1 in 100 pregnancies in Indonesia to 1 in 200 pregnancies in Mexico to 1 in 5000 pregnancies in Paraguay. [13] The study of pathologic material from first- and second-trimester abortions established a frequency of complete and partial hydatidiform moles in Ireland of 1 per 1945 pregnancies and 1 per 695 pregnancies, respectively. [14]

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