Chocolate Cysts: When to Consider Surgery for Ovarian Tumors - Obstetrics and Gynecology

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Chocolate cyst


Hello Dr.
Tsai: During my examination last year, a 4 cm tumor was found in my ovary.
At that time, my CA-125 level was normal (in the 20s).
After a year, during my follow-up examination, the tumor has increased to 6 cm, and my CA-125 level is approximately 425.
The doctor mentioned that surgery is necessary to determine whether it is a chocolate cyst or a teratoma, but it seems more likely to be a chocolate cyst.
I would like to ask for your opinion on the following:
1.
Given these data, is the tumor growth rate considered fast? I have seen cases where tumors increased by 2 cm in just one week.
2.
If you were treating this patient, would you recommend surgery, or would you suggest monitoring the tumor for changes?
3.
If surgery is necessary, is it better to go to a regional hospital, or is a local hospital sufficient?

Xiao Youxin, 20~29 year old female. Ask Date: 2018/07/26

Dr. Cai Yonglong reply Obstetrics and Gynecology


Hello: A chocolate cyst is caused by the accumulation of menstrual blood within the ovary.
If it reaches a size of 5-6 centimeters or more, surgical treatment (laparoscopic surgery) is necessary; otherwise, there is a risk of adhesions, rupture, bleeding, or torsion.
Please consult a gynecologist for an internal examination.
Thank you for your inquiry.

Reply Date: 2018/07/26

More Info


When it comes to understanding chocolate cysts (also known as endometriomas) and the considerations for surgery, there are several important factors to take into account. Based on your situation, where you have a 6 cm tumor with a significantly elevated CA-125 level, it is crucial to approach this matter with caution and thorough evaluation.

1. Tumor Growth Rate: The growth rate of ovarian tumors can vary widely. In your case, the increase from 4 cm to 6 cm over a year is notable, especially in conjunction with the rise in CA-125 levels from a normal range to 425. While some tumors can grow rapidly, as you've mentioned, with increases of 2 cm in a week, your tumor's growth is concerning enough to warrant further investigation. A significant increase in size and elevated CA-125 levels can indicate a potential for malignancy, especially if the growth is consistent and rapid.

2. Surgical Recommendation: Given the combination of tumor size, growth rate, and elevated CA-125 levels, surgery is generally advisable in such cases. The primary goal of surgery would be to obtain a definitive diagnosis through histopathological examination of the tumor tissue. While observation might be an option in cases where the tumor is stable and CA-125 levels are normal, your situation suggests that the risks of waiting may outweigh the benefits. Surgery, particularly laparoscopic surgery, is often recommended for chocolate cysts, as it allows for both diagnosis and treatment while minimizing recovery time and complications.

3. Choosing the Right Facility for Surgery: The choice of surgical facility can depend on several factors, including the complexity of the case, the surgeon's expertise, and the resources available at the hospital. If your case is straightforward and the tumor is likely benign, a regional hospital with a qualified gynecologist may suffice. However, if there are concerns about malignancy or if the tumor is particularly complex, it may be prudent to seek care at a larger medical center or a specialized facility that can provide comprehensive care, including oncology services if needed.

In addition to these considerations, it’s essential to monitor any symptoms you may be experiencing, such as pelvic pain, changes in menstrual cycles, or any new symptoms that arise. These can provide additional context for your healthcare provider when making decisions about your treatment plan.

Additional Considerations:
- CA-125 Levels: While CA-125 is often elevated in cases of endometriosis and chocolate cysts, it can also be elevated in other conditions, including ovarian cancer. Therefore, it is not solely diagnostic but rather a marker that needs to be interpreted in conjunction with imaging studies and clinical findings.

- Follow-Up Care: After surgery, follow-up care is crucial. Regular monitoring of CA-125 levels and imaging studies may be necessary to ensure that there are no recurrences or complications.

- Fertility Considerations: If you are planning to conceive, discussing fertility preservation options with your healthcare provider may be beneficial, especially if there are concerns about the impact of surgery on your ovarian reserve.

In conclusion, based on the information provided, it would be prudent to consider surgical intervention to clarify the nature of the tumor and to address any potential risks associated with its growth. Always consult with your healthcare provider to discuss the best course of action tailored to your specific situation.

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