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Current management of complete and partial molar pregnancy
1New England Trophoblastic Disease Center, Brigham and Women's Hospital, Boston, MA 02115.
The Journal of Reproductive Medicine
|March 1, 1994
Summary
Molar pregnancy includes partial (PHM) and complete (CHM) forms, differing in genetics and presentation. Prompt evacuation and hCG monitoring are crucial for managing molar pregnancy and detecting gestational trophoblastic tumor (GTT).
Area of Science:
- Reproductive Endocrinology
- Gynecologic Oncology
- Maternal-Fetal Medicine
Background:
- Molar pregnancy encompasses two distinct entities: partial hydatidiform mole (PHM) and complete hydatidiform mole (CHM).
- These conditions vary significantly in epidemiology, genetics, histopathology, clinical presentation, and risk of persistent gestational trophoblastic tumor (GTT).
Purpose of the Study:
- To differentiate the clinical and genetic characteristics of PHM and CHM.
- To outline the diagnostic methods and potential complications associated with molar pregnancies.
- To emphasize the importance of prompt management and follow-up for molar pregnancies.
Main Methods:
- Comparison of clinical presentations, including vaginal bleeding, uterine size, and human chorionic gonadotropin (hCG) levels.
- Cytogenetic analysis to distinguish the genetic origins of CHM (all paternal) and PHM (dispermy, triploid).
- Sonographic findings, including vesicular patterns for CHM and gestational sac measurements for PHM.
Main Results:
- CHM typically presents with vaginal bleeding, enlarged uterus, and high hCG; PHM often mimics incomplete abortion with bleeding, small uteri, and low hCG.
- CHM is cytogenetically all male; PHM involves triploidy with an abnormal fetus.
- Complications of CHM include ARDS, hyperthyroidism, preeclampsia, and theca lutein cysts.
Conclusions:
- Accurate diagnosis via sonography and genetic analysis is essential for differentiating PHM and CHM.
- Prompt evacuation of molar pregnancies is indicated.
- Post-evacuation hCG monitoring is critical for early detection of GTT, and hysterectomy can reduce GTT risk if fertility preservation is not desired.