A molar pregnancy — also known as hydatidiform mole — is a rare complication of pregnancy characterized by the abnormal growth of trophoblasts, the cells that normally develop into the placenta. There are two types of molar pregnancy, complete molar pregnancy and partial molar pregnancy.
Can a baby survive a molar pregnancy?
Abstract. The incidence of a normal live fetus and a partial molar placenta is extremely rare. Although triploidy is the most frequent association, a fetus with normal karyotype can survive in cases of partial molar pregnancy.
Why does a molar pregnancy happen?
Molar pregnancies are caused by an imbalance in genetic material (chromosomes) in the pregnancy. This usually occurs when an egg that contains no genetic information is fertilised by a sperm (a complete molar pregnancy), or when a normal egg is fertilised by two sperm (a partial molar pregnancy).
Will you get a positive pregnancy test with a molar pregnancy?
Women with a molar pregnancy will have a positive pregnancy test and the same early symptoms of a normal pregnancy.
How long can a molar pregnancy go undetected?
There are often no symptoms of a molar pregnancy. It may only be diagnosed during a routine ultrasound scan at 8-14 weeks or during tests are done after a miscarriage.
Do molar pregnancies have a heartbeat?
Diagnosis. Most molar pregnancies are diagnosed in the first trimester. This condition may be discovered when a heartbeat does not become detectable by 12 weeks, but this can also be true of missed miscarriages.
How high are hCG levels in molar pregnancy?
The measurement of high hCG levels in excess of 100,000 mIU/mL suggests the diagnosis of a complete molar pregnancy, particularly when associated with vaginal bleeding, uterine enlargement and abnormal ultrasound findings.
What are the chances of a molar pregnancy?
Approximately 1 in every 1,000 pregnancies is diagnosed as a molar pregnancy. Various factors are associated with molar pregnancy, including: Maternal age. A molar pregnancy is more likely in women older than age 35 or younger than age 20.
Who is at risk for a molar pregnancy?
The risk of complete molar pregnancy is highest in women over age 35 and younger than 20. The risk is even higher for women over age 45. Age is less likely to be a factor for partial moles. For choriocarcinoma, risk is lower before age 25, and then increases with age until menopause.
How do they remove a molar pregnancy?
- Dilation and curettage (D&C). To treat a molar pregnancy, your doctor will remove the molar tissue from your uterus with a procedure called dilation and curettage (D&C). …
- Hysterectomy. …
- HCG monitoring.
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What happens if a molar pregnancy is not treated?
If not treated, a molar pregnancy can be dangerous to the woman. It sometimes can cause a rare form of cancer. A molar pregnancy is a kind of gestational trophoblastic disease (also called GTD). This is a group of conditions that cause tumors to grow in the uterus.
Why is hCG high in molar pregnancy?
In women with a complete mole pregnancy, levels of hCG may be higher than expected at that stage of the pregnancy. Rapidly growing placenta tissue triggers the release of hCG.
How do you self check your stomach for pregnancy?
Walk your fingers up the side of her abdomen (Figure 10.1) until you feel the top of her abdomen under the skin. It will feel like a hard ball. You can feel the top by curving your fingers gently into the abdomen. Figure 10.1 With the woman lying on her back, begin by finding the top of the uterus with your fingers.
Are molar pregnancies painful?
Pelvic pain and pressure.
Tissues in a molar pregnancy grow faster than they should, especially in the second trimester. Your stomach may look too large for that early stage in pregnancy. The fast growth can also cause pressure and pain.
How do you know if you have a blighted ovum or molar pregnancy?
Blighted ovum and partial molar pregnancy can look similar on an ultrasound. However, a partial mole usually shows the remains of embryonic tissue, which never appears in a blighted ovum.
Do you always bleed with a molar pregnancy?
Choriocarcinomas can cause persistent bleeding in the weeks or months after delivery, but this happens very rarely. (Most bleeding like this is not caused by a choriocarcinoma). Choriocarcinomas associated with molar pregnancies almost always follow complete moles rather than partial moles.