
The lining of the uterus is called the endometrium and it is shed monthly if pregnancy does not occur. The endometrial tissue passes through the uterus and outside the body in the form of menstrual bleeding. Endometriosis results when menstrual bleeding flows backwards through the fallopian tubes and grows outside the uterus. Distortion of the anatomy due to endometriosis can block the fallopian tubes and prevent the sperm from reaching and fertilizing the egg. Some theorize that endometriosis can secrete toxins that can reduce fertility.
Painful intercourse and painful, heavy menstrual periods may be symptoms of endometriosis. However, some cases of endometriosis are totally without symptoms. A surgical procedure called laparoscopy can confirm the diagnosis of endometriosis.
The cause endometriosis is not clear; however, a leading theory is retrograde menstruation. This backward flow of menstrual bleeding through the tubes and into the pelvis might cause the endometrial cells to implant on the ovaries, uterus and other non-reproductive abdominal organs. Researchers also think that it could be genetic, since female family members sometimes share the condition.
Endometriosis can be treated in several ways, depending on the severity of the condition:
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