Endometrioma Identified on Ultrasound
A cystic ovarian mass raises suspicion for endometriosis.
- 17–44%: Prevalence in endometriosis (of patients)
- 2–10 cm: Typical size at diagnosis (cystic diameter)
- ~93%: Ultrasound sensitivity (for endometrioma)
- ~20%: Bilateral involvement (of cases)
Ground-glass appearance
Homogeneous low-level echoes signal old blood.
Differential diagnosis
Rules out hemorrhagic cyst, dermoid, malignancy.
Baseline AMH testing
Ovarian reserve checked before any treatment.
Monitoring Without Intervention
Serial scans track size and symptoms over time.
- ~10%: Growth rate untreated (per year, average)
- 3–6 mo: Recheck interval (ultrasound follow-up)
- rare: Spontaneous resolution (endometriomas persist)
- <1%: Malignant transformation (lifetime risk)
Symptom tracking
Pain and cycle changes guide next steps.
Size threshold
Growth past 6–7 cm often prompts action.
Fertility clock
Age and pregnancy plans shape waiting time.
Hormonal Therapy Limits Growth
Suppression shrinks the cyst but rarely eliminates it.
- ~20–30%: Size reduction on therapy (typical shrinkage)
- uncommon: Complete resolution (cyst usually persists)
- GnRH / OCPs: Common agents (progestins also used)
- high: Symptom relief (pain scores drop)
Mechanism
Estrogen suppression starves ectopic endometrial tissue.
Bridge therapy
Often used before or instead of surgery.
Rebound risk
Cyst can regrow once treatment stops.
Surgical Excision of the Cyst Wall
Laparoscopic stripping removes the cyst and some healthy ovary.
- ~15–30%: Recurrence after surgery (over 5 years)
- ~30–40%: AMH drop post-op (average decline)
- higher loss: Larger cyst impact (more tissue excised)
- Stripping: Technique (vs. ablation / fenestration)
Excision technique
Cyst wall is peeled from healthy cortex.
Collateral tissue loss
Follicle-rich cortex often comes away too.
Alternative techniques
Ablation spares tissue but recurs more often.
Comparing Ovarian Reserve Impact
AMH and reserve outcomes diverge by chosen approach.
- Largest: Cystectomy AMH loss (especially big cysts)
- Moderate: Medical therapy loss (reversible suppression)
- Smallest: Watchful waiting loss (no surgical trauma)
- Essential: Shared decision-making (age, fertility, symptoms)
Reserve trade-off
Every approach balances symptoms against fertility.
Cyst size matters
Bigger cysts mean bigger surgical AMH drops.
Individualized care
Choice depends on age and family planning.