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hydatiform mole: types

complete/classical mole
  • fertilization of an "empty egg"; diploid karyotype (paternal XX)
  • no fetal parts; no chorionic membrane
  • 20% malignant

complete mole with coexistent fetus (2%)
  • molar degeneration of an identical twin

partial mole
  • areas of molar change alternating with normal chorionic villi
  • triploid karyotype (66% XXY; 33% XXX)
  • early onset of preeclampsia
  • fetal structures present (e.g., placenta)
  • no malignant potential

see: hydatiform mole

Yong H. Hahn, MD  -  2 February 1995
Last updated:  1 October 2013


 

Related CHORUS documents:
hydatiform mole
gestational trophoblastic disease
choriocarcinoma
hemorrhagic brain metastases
intrauterine growth retardation (IUGR)
fetal doppler study

 

Copyright © 2013, Charles E. Kahn, Jr.