If your doctor suspects a molar pregnancy, he or she will probably order a blood test to measure the level of human chorionic gonadotropin (HCG) — a pregnancy hormone — in your blood. He or she will also likely do an ultrasound.
With a standard ultrasound, high-frequency sound waves are directed at the tissues in the abdominal and pelvic area. During early pregnancy, however, the uterus and fallopian tubes are closer to the vagina than to the abdominal surface, so the ultrasound may be done through a wandlike device placed in your vagina.
An ultrasound of a complete molar pregnancy — which can be detected as early as eight or nine weeks of pregnancy — may show:
- No embryo or fetus
- No amniotic fluid
- A thick cystic placenta nearly filling the uterus
- Ovarian cysts
An ultrasound of a partial molar pregnancy may show:
- A growth-restricted fetus
- Low amniotic fluid
- A thick cystic placenta
If your health care provider detects a molar pregnancy, he or she may check for other medical problems, including:
Oct. 24, 2014
- Gestational trophoblastic disease. American Cancer Society. http://www.cancer.org/acs/groups/cid/documents/webcontent/003104-pdf.pdf. Accessed July 20, 2014.
- Molar pregnancy. March of Dimes. http://www.marchofdimes.com/loss/molar-pregnancy.aspx. Accessed July 19, 2014.
- Ferri FF. Ferri's Clinical Advisor 2015: 5 Books in 1. Philadelphia, Pa.: Mosby Elsevier; 2015. https://www.clinicalkey.com. Accessed July 19, 2014.
- Goff B. Gestational trophoblastic disease: Management of hydatidiform mole. http://www.uptodate.com/home. Accessed July 19, 2014.
- Baergen RN. Gestational trophoblastic disease: Pathology. http://www.uptodate.com/home. Accessed July 19, 2014.
- Goldstein DP, et al. Gestational trophoblastic disease: Epidemiology, clinical manifestations and diagnosis. http://www.uptodate.com/home. Accessed July 19, 2014.
- Garner EIO. Gestational trophoblastic neoplasia: Staging and treatment. http://www.uptodate.com/home. Accessed July 19, 2014.
- Lentz GM, et al. Comprehensive Gynecology. 6th ed. Philadelphia, Pa.: Mosby Elsevier; 2012. http://www.clinicalkey.com. Accessed July 19, 2014.
- Frequently asked questions. Special procedures FAQ062. Dilation and curettage. American College of Obstetricians and Gynecologists. http://www.acog.org/publications/faq/faq062.cfm. Accessed July 19, 2014.
- American College of Obstetricians and Gynecologists (ACOG) Committee on Practice Bulletins — Obstetrics. ACOG Practice Bulletin No. 53: Diagnosis and treatment of gestational trophoblastic disease. Obstetrics & Gynecology. 2004;103:1365.
- Harms RW (expert opinion). Mayo Clinic, Rochester, Minn. Aug. 6, 2014.
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