Cervical hypoplasia
Cervical hypoplasia is an anatomical abnormality that results in a malformed cervix, which can prevent a period from arriving or cause pain. The shape and size of the cervix can determine whether assistance will be required for pregnancies.
MRKH syndrome
MRKH syndrome is a congenital abnormality, whereby the uterus, top part of the vagina, and cervix do not exist or are very small. Ovaries are usually normal, since the ovaries run off a different system.