Ovarian agenesis

Ovarian agenesis is a rare congenital disorder characterized by the absence of one or both ovaries at birth. This condition is also known as ovarian aplasia or ovarian failure. It is a type of gonadal dysgenesis, which refers to the abnormal development or function of the gonads.

Etiology

The exact cause of ovarian agenesis is unknown, but it is believed to be due to a combination of genetic and environmental factors. Some cases have been associated with mutations in the FOXL2 gene, which is involved in the development of the ovaries. Other cases may be due to exposure to certain environmental factors during pregnancy, such as certain medications or toxins.

Clinical Presentation

Women with ovarian agenesis typically present with primary amenorrhea, which is the absence of menstruation by age 16. They may also have underdeveloped secondary sexual characteristics, such as lack of breast development or pubic hair. In some cases, women with ovarian agenesis may have normal external genitalia and secondary sexual characteristics, but they are infertile due to the absence of ovaries.

Diagnosis

The diagnosis of ovarian agenesis is usually made based on the clinical presentation and confirmed by imaging studies, such as ultrasound or magnetic resonance imaging (MRI), which can show the absence of ovaries. Genetic testing may also be performed to identify any mutations in the FOXL2 gene or other genes associated with ovarian agenesis.

Treatment

There is currently no cure for ovarian agenesis. Treatment is focused on managing the symptoms and complications of the condition. Hormone replacement therapy (HRT) may be used to induce puberty and maintain secondary sexual characteristics. Infertility can be addressed through the use of assisted reproductive technologies, such as in vitro fertilization (IVF) with donor eggs.

Prognosis

The prognosis for women with ovarian agenesis is generally good, as the condition does not typically affect lifespan. However, these women are at increased risk for certain health problems, such as osteoporosis, due to the lack of estrogen produced by the ovaries. They may also experience psychological distress related to infertility and sexual dysfunction.