Recent studies by domestic and international scholars indicate that women with hydatidiform moles typically experience pronounced pregnancy symptoms early in the disease, especially those over 40 years old. After using contraception, they may experience amenorrhea followed shortly by severe nausea, vomiting, anorexia, or early onset of pregnancy-induced hypertension, edema, and proteinuria.Therefore, when a woman—especially a middle-aged woman—experiences pronounced pregnancy symptoms or early signs of toxemia after amenorrhea, the possibility of a molar pregnancy should be suspected, and she should seek medical examination.In China, approximately 290 out of every 100,000 women experience a molar pregnancy, occurring in about 1 in 1,290 pregnancies. Among molar pregnancies, 50% to 10% may undergo malignant transformation into a malignant mole, also known as choriocarcinoma or choriocarcinoma.
Malignant transformation typically occurs within 1–2 years. To detect malignancy early for timely treatment, regular hospital check-ups are recommended within two years, including gynecological examinations, B-ultrasound, chest X-rays, and pregnancy tests. When malignancy develops, pregnancy tests will turn positive. However, pregnancy tests are also positive during normal pregnancy, making the two easily confused.To avoid diagnostic difficulties caused by false-positive pregnancy tests due to subsequent pregnancies, patients should practice contraception for 1–2 years.
Molar pregnancy is a benign tumor occurring in women. According to survey statistics, its incidence rate in China is approximately 0.3%. Among such benign tumors, the malignant transformation rate is relatively high, accounting for about 7%–16%. Early detection and treatment of malignant transformation are crucial for ensuring health.
What are the primary symptoms of hydatidiform mole malignancy?
1. Abdominal pain: Caused by rapid uterine enlargement and distension, or intrauterine bleeding stimulating uterine contractions. Pain intensity varies.
3. Hemoptysis: Some patients may experience coughing up blood or sputum with blood streaks. Physicians should proactively inquire about this symptom.
4. Vaginal bleeding: This severe symptom indicates spontaneous abortion of the molar pregnancy. It typically begins 2–3 months after amenorrhea onset, often presenting as intermittent light bleeding interspersed with recurrent heavy hemorrhages. Close examination may reveal vesicular masses in the blood.Vaginal bleeding clearly originates from the uterus; while some blood flows out vaginally, some accumulates within the uterus. It may also temporarily accumulate entirely within the uterus, prolonging the duration of amenorrhea.
5. Anemia and Infection: Repeated bleeding without timely treatment inevitably leads to anemia and its associated symptoms; in rare cases, bleeding may even prove fatal. Recurrent bleeding increases susceptibility to infection, particularly if vaginal procedures are performed under unhygienic conditions or sexual intercourse occurs during bleeding episodes.Infection may be confined to the uterus and adnexa or progress to sepsis. 6. Absent fetal findings: Around 8 weeks of amenorrhea, ultrasound monitoring reveals no gestational sac, fetal heartbeat, or fetal structure. No fetal movement is felt, and no fetal heartbeat is detected even at 18 weeks. Ultrasound scans show snowflake-like patterns without fetal images.
7. Luteinized Ovarian Cyst Luteinized ovarian cysts often develop in some patients, detectable via bimanual examination or more readily by ultrasound.
8. Uterine enlargement: Most patients exhibit a uterus larger than expected for gestational age. Many present due to palpable lower abdominal masses (enlarged uterus or luteinized cysts), though a minority may have a uterus consistent with or smaller than gestational age.
Two scenarios are possible: ① Hydatidiform moles with atrophic degeneration cease development, forming a missed molar pregnancy.② Partial expulsion of hydatidiform masses has reduced the uterine size, resulting in an incomplete molar abortion.