What hydatidiform mole means?
Listen to pronunciation. (HY-duh-TIH-dih-form…) A slow-growing tumor that develops from trophoblastic cells (cells that help an embryo attach to the uterus and help form the placenta) after fertilization of an egg by a sperm. A hydatidiform mole contains many cysts (sacs of fluid).
What is incomplete hydatidiform mole?
What is a partial molar pregnancy? A partial molar pregnancy is a variation of a molar pregnancy, an abnormal pregnancy in which an embryo (the fertilized egg) either develops incompletely, or doesn’t develop at all. Instead, a cluster of grape-like cysts (known as a hydatidiform mole) grows in the uterus.
What is the difference between complete and incomplete hydatidiform mole?
In complete hydatidiform mole, there is no fetal tissue present; in partial hydatiform moles, there is some residual fetal tissue. Both are due to the over-proliferation of chorionic villi.
What is amolar pregnancy?
A molar pregnancy is when there’s a problem with a fertilised egg, which means a baby and a placenta do not develop the way they should after conception. A molar pregnancy will not be able to survive. It happens by chance and is very rare. If you have a molar pregnancy, there is support available to help you.
What is a classical hydatidiform mole?
Overview. 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.
What is trophoblastic disease?
Gestational trophoblastic disease (GTD) is the term given to a group of rare tumors that develop during the early stages of pregnancy. After conception, a woman’s body prepares for pregnancy by surrounding the newly fertilized egg or embryo with a layer of cells called the trophoblast.
Why is complete mole called complete?
Molar pregnancies are categorized as partial moles or complete moles, with the word mole being used to denote simply a clump of growing tissue, or a growth. A complete mole is caused by a single sperm (90% of the time) or two (10% of the time) sperm combining with an egg which has lost its DNA.
What is ectopic and molar pregnancy?
Occasionally, molar pregnancies develop after a miscarriage, a successful pregnancy, or an ectopic pregnancy, when cells remain in the uterus. In an ectopic pregnancy, a fertilized egg implants outside the uterus.
What is GTD in gynecology?
Is there such a thing as a hydatidiform mole?
A hydatidiform mole is a relatively rare condition in which tissue around a fertilized egg that normally would have developed into the placenta instead develops as an abnormal cluster of cells. (This is also called a molar pregnancy.)
What kind of mole is in the uterus?
Hydatidiform mole (HM) is a rare mass or growth that forms inside the womb (uterus) at the beginning of a pregnancy. It is a type of gestational trophoblastic disease (GTD). What is a twin molar pregnancy?
Who was the first person to describe a mole?
The moles were first described by Hippocrates (470–410 BC) who explained their formation through the consumption of dirty water by the pregnant women, where the water originates from the marshes. However, the terms mole and hydatidiform were later employed by William Smelie (1752).
When does a mole become invasive in gestation?
A nutritional defect during the differentiation of the oocytes or the deterioration of the limited oxygen pressure during the first trimester of gestation may lead to the formation of a HM. In countries with poor medical health care system, moles (mainly the CHM) can become invasive or, in rare cases, lead to gestational choriocarcinomas.