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Pregnancy / Fetus



hydatiform mole

  • trophoblastic proliferation with avascularity of chorionic villi
  • marked edema and enlargement of chorionic villi

  • severe eclampsia prior to 24 weeks
  • 1st trimester bleeding
  • abnormal elevation of beta-hCG
  • passing grapelike vesicles per vagina

  • uterus large for dates (50%)
  • hyperechoic intrauterine tissue interspersed with numerous punctate hypoechoic areas (hydropic villi)
  • in 25% atypical appearance: large hyperechoic areas (blood clots) and areas of cystic degeneration; resembles incomplete abortion
  • thick hyperechoic rim around central anechoic zone
  • bilateral theca lutein cysts (18-37%)

see also:

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


Related CHORUS documents:
hydatiform mole: types
gestational trophoblastic disease
hemorrhagic brain metastases
ectopic pregnancy
beta hCG


Copyright © 2013, Charles E. Kahn, Jr.