A 27-year-old woman presents with 8 weeks amenorrhea and vaginal bleeding. Transvaginal ultrasound shows a uterine cavity filled with mixed echogenic tissue with multiple small cystic spaces, and a focal area showing fetal parts with a heartbeat. Which of the following is the most likely diagnosis?
- A Complete hydatidiform mole
- B Partial hydatidiform mole ✓
- C Missed abortion with hydropic degeneration
- D Twin pregnancy with one complete mole
Correct answer: B. Partial hydatidiform mole
Explanation
Partial hydatidiform mole classically presents with ultrasound findings of a focal molar change with identifiable fetal parts and occasionally a fetal heartbeat. Complete mole shows a diffuse 'snowstorm' or 'bunch of grapes' appearance with NO fetal parts. The presence of a fetal heartbeat with molar changes strongly suggests partial mole. Twin pregnancy with a coexisting complete mole and normal fetus is rare.
Reference: Williams Obstetrics, 26th ed.
High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP
Written and medically reviewed by the StethoPrep medical team.