Endometriosis staged I–IV
Minimal Endometriosis
Stage I (Minimal)
Findings restricted to only superficial lesions and possibly a few filmy adhesions.
Mild Endometriosis
Stage II (Mild)
In addition, some deep lesions are present in the cul-de-sac.
Moderate Endometriosis
Stage III (Moderate)
As above, plus the presence of endometriomas on the ovary and more adhesions.
Severe Endometriosis
Stage IV (Severe)
As above, plus large endometriomas, extensive adhesions. Implants and adhesions may be found beyond the uterus. Large ovarian cysts are common.
