Molar pregnancy


  • Type of gestational trophoblastic disease
    • Neoplasm of placental hCG-producing trophoblast cells
    • Non-invasive (invasive form is choriocarcinoma, can metastasize to brain, liver, lung)
  • Non-viable fertilized egg implants in uterine wall
    • Complete: all chorionic villi are vesicular, swollen, with no embryonic development
    • Partial: some vesicular chorionic villi, +/- (nonviable) embryonic development

Clinical Features

Due primarily to elevated levels of hCG

Differential Diagnosis


Molar pregnancy on ultrasound
  • Serum hCG
  • Evaluate for other causes of or electrolyte derangements due to vomiting
  • Ultrasound: enlarged uterus with interspersed lucent and brighter areas ("snowstorm" appearance)


  • Ob/gyn consult
    • Suction curettage as inpatient (due to risk of bleeding)
  • Resuscitate if severe bleeding
  • Treat preeclampsia
  • Symptomatic resuscitation of nausea/vomiting


  • Admit

See Also

External Links