O01.9: Hydatidiform mole, unspecified
A woman has two ovaries. Each ovary normally takes turns maturing one egg every month. These eggs may be fertilized by sperm. The eggs pass to the uterus through the fallopian tube.
A fertilized egg cell can continue to develop and get bigger. With a normal pregnancy, this results in the child. However, mistakes can happen during fertilization that affect the further development. The egg cell can still get bigger, but there is usually no viable child. The tissue from the egg cell can multiply uncontrollably and quickly get bigger. This is then called a tumor or cystic mole.
This kind of tumor grows in the uterus and produces lots of messenger substances. This means it can at first trigger some changes that also occur during a normal pregnancy. These include nausea or a growing belly. However, you may also have pain or bleeding from the vagina. When parts of the tumor are rejected, then cystic tissue can leak out of the vagina.
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