The picture above shows normal organs. Your healthcare provider can mark where you have growths of endometriosis tissue. These are called implants.
Staging depends on certain factors. These include:
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Number, size, and site of implants
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Presence and extent of adhesions
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Involvement of other pelvic organs
The stage may not match the pain you feel. Even early stages can cause a large amount of pain. Some people with later-stage disease may have few symptoms.
The 4 stages are listed below and are based on a complex scoring system:
I - Minimal
II - Mild
III - Moderate
IV - Severe
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Featured in
Online Medical Reviewer: Dozier, Tennille, RN, BSN, RDMS
Online Medical Reviewer: Sacks, Daniel, MD, FACOG
Date Last Reviewed: 09/01/2026
© 2000-2026 The StayWell Company, LLC. All rights reserved. This information is not intended as a substitute for professional medical care. Always follow your healthcare professional's instructions.
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