Does endometrioma surgery reduce AMH or ovarian reserve?

Yes, endometrioma surgery can lower AMH and ovarian reserve, because removing an ovarian endometrioma (especially with a cystectomy) can unintentionally remove or damage healthy ovarian tissue along with the cyst wall. That risk helps explain why ovarian endometriomas are handled differently from endometriosis on other pelvic surfaces, and why surgical technique and energy use matter so much.

It’s also important to know that a single AMH value doesn’t always tell the whole story with endometriomas. Ultrasound-based antral follicle count (AFC) can show the impact on each ovary: often the ovary with the endometrioma has a lower AFC, and larger cysts may be linked with a lower AFC even when AMH doesn’t change as clearly.

When surgery is the right next step, our goal is to treat the disease while protecting ovarian tissue, using meticulous excision and, in select situations, limited micro-ablation rather than more burning. In severe cases (such as multiple large endometriomas or concern for a tumor), more aggressive surgery may be necessary, but that decision should be individualized based on your symptoms, imaging, fertility goals, and baseline reserve testing. Reach out to our team if you’d like help weighing those tradeoffs.