Uterus and Implantation
Uterine abnormalities interfere with egg fertilization or embryo development and often include:
Thin Uterine Lining
Sometimes, an abnormality of the uterus happens before birth. Like other organs in the body, a woman’s reproductive organs form with she is still a fetus inside her mother’s uterus.
The reproductive organs include the uterus and fallopian tubes. Sometimes the uterus and fallopian tubes may not form like they should.
These malformations are called mullerian anomalies. There are many types of mullerian anomalies, including failure for the uterus or tubes to form (agenesis), a complete duplication of the uterus, cervix, and vagina (didelphys), two uteri sharing a single cervix and vagina (bicornuate), a single uterus with a fibrous band going down the center of the uterus (septate), and normal uterus with an incidental dent in it (arcuate).