A molar pregnancy (also called a hydatidiform mole or HM) is a tumor (growth) that develops in the uterus (womb) at the beginning of pregnancy. In a molar pregnancy, the placenta doesn’t form correctly.
Are all molar pregnancies cancerous?
This condition is one of a group of conditions known as gestational trophoblastic disease (GTDs). Molar pregnancies used to be called hydatidiform moles but now most people call them molar pregnancies. Most molar pregnancies are mostly benign (not cancerous).
What kind of cancer is molar pregnancy?
The most common form of gestational trophoblastic disease (GTD) is a hydatidiform mole, also known as a molar pregnancy. It is made up of villi that have become swollen with fluid. The swollen villi grow in clusters that look like bunches of grapes.
What percent of molar pregnancies are cancerous?
In 15% of cases, an invasive mole can spread to tissues outside of the uterus. Pregnancy tissues can develop into a cancer called choriocarcinoma, though this is rare. Fifty percent of choriocarcinomas form during a molar pregnancy.
How does a molar pregnancy become cancerous?
The cancer may also occur after a normal pregnancy. But it most often occurs with a complete hydatidiform mole. This is a growth that forms inside the womb at the beginning of a pregnancy. The abnormal tissue from the mole can continue to grow even after attempted removal, and can become cancerous.
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.
Can you die from molar pregnancy?
Most emphatically, NO. Women do not die these days from molar pregnancy or invasive mole and only very, very rarely from choriocarcinoma.
Is a molar pregnancy a real baby?
Complete molar pregnancies have only placental parts (there is no baby) and form when the sperm fertilizes an empty egg. Because the egg is empty, no baby is formed. The placenta grows and produces the pregnancy hormone, hCG. Unfortunately, an ultrasound will show that there is no fetus, only a placenta.
What happens if molar pregnancy is not treated?
If a molar pregnancy is not treated or does not miscarry completely it can progress and cause a range of serious conditions (known as gestational trophoblastic neoplasia), including: persistent GTD – persistent growth of the abnormal placental tissue. invasive mole – the tumour spreads into the wall of the uterus.
Can molar pregnancy spread?
Although an invasive mole is a type of molar pregnancy, it is considered a GTN because of its potential to grow and spread. An invasive mole may grow into the muscle layer of the uterus. Fewer than 15% of molar pregnancies become invasive and spread outside of the uterus.
How rare is 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.
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.
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.
How do they remove a molar pregnancy?
To treat a molar pregnancy, your doctor will remove the molar tissue from your uterus with a procedure called dilation and curettage (D&C). A D&C is usually done as an outpatient procedure in a hospital.
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).
What is a twin molar pregnancy?
Twin molar pregnancy is a rare obstetric event, characterized by the coexistence of a hydatidiform mole and a potentially viable fetus with a normal placenta, associated with several pregnancy complications, such as spontaneous abortions, intrauterine deaths, preeclampsia, and hyperthyroidism, potentially leading to an …