Minimal Endometriosis — rASRM Stage I
Few superficial implants, score 1–5, no meaningful adhesions.
- 1–5: Score Range (rASRM points)
- Superficial: Lesion Depth (peritoneal implants)
- None: Adhesions (filmy or absent)
- Low: Fertility Impact (mild association)
Lesion appearance
Small, scattered superficial implants dot the peritoneum.
Adhesion status
Pelvic anatomy stays essentially normal and mobile.
Clinical significance
Often found incidentally during unrelated laparoscopy.
Stage I rarely explains pelvic pain by itself.
Mild Endometriosis — rASRM Stage II
More superficial implants, score 6–15, mild adhesions appear.
- 6–15: Score Range (rASRM points)
- Superficial–shallow: Lesion Depth (expanding implants)
- Mild, filmy: Adhesions (early tethering)
- Modest: Fertility Impact (still manageable)
Lesion burden
Implant number and depth increase gradually.
Early adhesions
Thin filmy bands begin tethering ovary to pelvis.
Symptom pattern
Pain remains mild or intermittent for most.
Diagnosis still requires direct laparoscopic visualization.
Moderate Endometriosis — rASRM Stage III
Deeper implants, endometriomas form, score 16–40.
- 16–40: Score Range (rASRM points)
- <2 cm: Endometrioma Size (per ovary)
- Moderate: Adhesions (dense in spots)
- Significant: Fertility Impact (surgical planning needed)
Deep implants
Lesions invade below the peritoneal surface.
Ovarian endometriomas
Chocolate cysts distort normal ovarian architecture.
Adhesion density
Dense bands start restricting pelvic organ mobility.
Endometriomas weigh heavily toward Stage III–IV totals.
Severe Endometriosis — rASRM Stage IV
Deep implants, large endometriomas, dense adhesions, score over 40.
- >40: Score Range (rASRM points)
- >2 cm: Endometrioma Size (often bilateral)
- Dense: Adhesions (organ-obliterating)
- High: Fertility Impact (complex surgical care)
Extensive disease
Lesions and cysts cover wide pelvic surfaces.
Frozen pelvis
Dense adhesions can obliterate the cul-de-sac.
Surgical complexity
Excision often needs multidisciplinary surgical teams.
Stage IV correlates most strongly with infertility risk.
Surgical Staging Complete
Your slider totals now set the final rASRM stage.
- 1–150: Score Range (full rASRM scale)
- 4: Classification Tiers (stages I–IV)
- 3: Criteria Scored (location, depth, adhesions)
- Laparoscopy: Gold Standard (direct visualization)
Scoring basis
Points sum lesion size, depth, and adhesion severity.
Stage thresholds
Totals of 1–5, 6–15, 16–40, and 40+ define stages.
Treatment planning
Stage guides surgical extent and fertility counseling.
Adjust the sliders above to explore every staging outcome.