Endocrine and Reproductive Disorders · USMLE Step 1

A pregnant woman develops painless vaginal bleeding and a 'snowstorm' pattern on ultrasound. Which condition is this?

  1. Complete hydatidiform mole
  2. Partial hydatidiform mole
  3. Placental abruption
  4. Choriocarcinoma
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Correct answer: Complete hydatidiform mole

A complete mole presents with diffuse swelling of villi, extremely high hCG, and a 'snowstorm' ultrasound pattern. Fetal tissue is absent.

Difficulty: Medium Question 19 of 20

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