What happened when a 7 cm chocolate cyst disappeared on its own?

Endometrioma, commonly known as "chocolate cyst," typically develops when endometrial tissue abnormally proliferates within the ovary and undergoes cyclic bleeding. This forms a cyst filled with old blood that appears brownish, resembling chocolate—hence the name. The disappearance of a 7 cm endometrioma may be caused by pregnancy, natural ovulation processes, immune system abnormalities, hormonal imbalances, or cyst rupture. If concerned, it is advisable to consult a healthcare provider promptly. Specific explanations are as follows:

1. Pregnancy

Elevated estrogen and progesterone levels during pregnancy suppress the growth and shedding of endometrial tissue, reducing bleeding from ectopic endometrial implants, which may lead to shrinkage or resolution of the endometrioma. Regular prenatal check-ups are recommended to monitor maternal health, and continued monitoring of the endometrioma should be conducted postpartum.

2. Natural Ovulation Process

In rare cases, an ovarian chocolate cyst may change due to factors associated with normal ovulation—such as follicular rupture or corpus luteum formation—leading to a reduction in cyst size or even disappearance. No specific treatment is generally required.

3. Immune System Abnormalities

Immune system dysfunction may trigger an autoimmune response against ectopic endometrial tissue within the cyst, promoting absorption of its contents and resulting in cyst shrinkage. Systemic symptoms related to immune dysfunction may include fatigue and joint pain. Treatment under medical supervision may include medications such as cyproterone acetate combination tablets, drospirenone-ethinyl estradiol tablets, etc.

4. Hormonal Imbalance

Hormonal imbalances, particularly disruptions in the estrogen-to-progesterone ratio, can influence the growth and regression of endometriomas, leading to changes in their size. These imbalances are often accompanied by menstrual irregularities and mood fluctuations. Lifestyle modifications are recommended, and if necessary, medications such as propylthiouracil tablets, methimazole tablets, or propranolol hydrochloride tablets may be used under medical guidance.

5. Cyst Rupture

The wall of an endometrioma is relatively thin and may rupture under excessive pressure or external force. Once ruptured, the cyst's contents spill into the pelvic cavity and are gradually absorbed by the body, causing the cyst to shrink or disappear. This may be accompanied by severe abdominal pain and vaginal bleeding. Emergency medical care is required; surgical removal of residual cystic tissue may be necessary to prevent infection.

In daily life, maintaining a healthy lifestyle, improving dietary habits, engaging in appropriate physical exercise, and enhancing overall physical fitness can help reduce the risk of disease onset.