Ovarian chocolate cyst is quite serious, also known as ovarian endometriosis cyst, which is a disease of endometriosis. Under normal circumstances, the endometrium grows in the uterine cavity and is shed once a month under the influence of female hormones, forming menstruation. If the fragments of endometrium shed during menstruation flow back through the fallopian tube and enter the pelvic cavity with the menstrual blood, they will be planted on the surface of the ovary or other parts of the pelvic cavity to form ectopic cysts. This ectopic endometrium is also affected by sex hormones and will be shed repeatedly along with the menstrual cycle. Bleeding, if the lesion occurs on the ovary, there will be local bleeding every menstrual period, which will enlarge the ovary and form a cyst containing old blood. This old blood will be brown, sticky and pasty, like chocolate, so Also known as "chocolate cyst".

Chocolate cysts can gradually increase in size and sometimes rupture during or after menstruation, but rarely become malignant. Although ovarian chocolate cyst is a benign disease, it has malignant behaviors such as proliferation, infiltration, metastasis and recurrence. This type of ovarian cyst is one of the most common diseases among women of reproductive age between 25 and 45 years old, with an incidence rate of 10% to 15%. Endometriosis lesions will grow larger over time, gradually eroding normal tissue, causing irreversible damage to ovarian tissue. Severe cases require surgery.

Chocolate cysts are actually a type of endometriosis. Endometriosis is caused by endometriosis in normal locations locating in the ovaries, pelvis, uterus and other parts. If the ectopy is in the ovary, the endometriosis lesions in the ovary will peel off and bleed every month to form a cyst, which is similar to chocolate, so it is called chocolate cyst. For the treatment of chocolate cyst, if the chocolate cyst is 2-3cm, you can temporarily observe or use traditional Chinese medicine. If a chocolate cyst ruptures repeatedly, has elevated tumor markers, or grows rapidly, it needs to be treated with the help of surgery, such as chocolate cyst removal. Postoperative follow-up was also provided to control recurrence and growth of new chocolate cysts.