The classification system
Stage I (minimal): superficial implants, mild adhesions. Stage II (mild): more extensive superficial lesions. Stage III (moderate): deep implants, mild adhesions, ovarian involvement. Stage IV (severe): deep implants, dense adhesions, large endometriomas.
What ASRM does not capture
Pain severity does not correlate with stage – a woman with stage I disease can have severe pain. Bowel and bladder involvement are not well captured. Fertility impact varies independently of stage. Newer #Enzian system better captures deep disease.
Clinical use
Standardised communication between specialists. Surgical planning. Research and outcome comparison. Counselling about overall disease burden. Useful but not the only metric for treatment decisions.
Dr Patel maps and, where indicated, stages disease at surgery — but counsels on your symptoms, fertility and ovarian reserve, never on the stage number alone.
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Frequently asked
A staging result is only useful alongside your symptoms, fertility goals and reserve. We put it in context.
What the endometriosis stages do — and do not — tell you
Endometriosis is commonly classified into four stages (minimal, mild, moderate, severe), most often using the revised ASRM system. The stage describes how much disease is seen and where, scored at surgery — but it is widely misunderstood, so it is worth being clear about its limits.
Stage does not equal symptoms
Crucially, the stage correlates poorly with pain. Women with minimal (stage I) disease can have severe pain, while some with extensive disease have few symptoms. A “low” stage never means your pain is not real or not worth treating.
Stage and fertility
Staging gives only a rough guide to fertility impact. Other tools — such as the endometriosis fertility index — combine disease findings with your age and history to estimate the chance of conception more usefully than stage alone.
How we use it
We use staging as one input among several, alongside symptom burden, fertility goals, ovarian reserve and disease mapping, to plan individualised care. The number is a description, not a destiny, and never the sole basis for a treatment decision.
Dr. Priyadatt Patel
Senior Gynecologist · Advanced Laparoscopic Surgeon · IVF and Endometriosis Programme Lead
MS OBGyn · Pregnancy Care · Advanced Gynaecological Ultrasound · Fertility Preservation
ESHRE / ESGE / AAGL / ASRM guideline-aligned practice. 3D Karl Storz precision technique. Fertility-preservation-first philosophy. Evidence-based decisions, honest counselling, long-term outcomes orientation.
Science City Road, Ahmedabad 380060
Mon–Sat 11:00–20:00 · +91 97234 31544
Naranpura, Ahmedabad
Mon–Sat 08:30–10:30 · +91 70460 02566
