Characterization of endometriosis in patients with Mullerian anomalies using the Enzian classification: A retrospective cohort study

Table 1 Summary of uterine, cervical and vaginal morphology (n = 75)

Component	Category	n	%
Uterus (U)	Arcuate/U0	4	5.3
	U1b	6	30.7
	U2a	14	18.67
	U2b	3	4
	U3c	13	17.33
	U4a	2	2.67
	U4b	1	1.33
	U5a-U5b	29	38.6
	Accessory cavitated uterine masses/U6	3	4.0
Cervix (C)	Normal/C0	29	38.7
	Mild anomaly/C1-C2	17	22.7
	Severe anomaly/C4	29	38.7
Vagina (V)	Normal/V0	46	61.3
	Anomaly/V4	29	38.7
Obstruction	No/N	62	82.7
	Yes/Y	13	17.3

Table 2 Distribution of endometriosis findings based on magnetic resonance imaging Enzian classification

Feature	Subtype/Location	Total (n = 75)	Percentage of total (%)	Percentage of patients with endometriosis, % (n = 22)
Peritoneum (P)	All	0	0	0
Ovary (O)	O1 (< 3 cm)	1	1.3	4.5
	O2 (3-7 cm)	12	16.0	54.5
	O3 (> 7 cm)	3	4.0	13.6
Tubo-ovarian/adhesions (T)	T2	8	10.7	36.4
	T3	3	4.0	13.6
Deep endometriosis	A: (Rectovaginal/retro-cervical/vagina)	0	0	0
	B: (parametrium/uterosacral ligament)	6	8.0	27.3
	C (rectosigmoid)	0	0	0
Adenomyosis (F)	Diffuse	2	2.7	9.1
	Focal	2	2.7	9.1

Table 3 Distribution of endometriosis and obstruction by uterine group (selected categories)

Feature	Category	Total (n)	Presence of endometriosis	Percentage with endometriosis (%)	P value
Uterus (U)	U0	4	3	75	0.006
	U1b	6	1	16.7
	U2a	14	3	21.4
	U2b	3	1	33.3
	U3c	13	7	53.8
	U4a	2	1	50
	U4b	1	1	100
	U5a	4	3	75
	U5b	25	1	4
	U6	3	1	33.3
Cervix (C)	C0	29	10	34.5	0.084
	C1	3	1	33.3
	C2	14	7	50
	C4	29	4	13.8
Vagina (V)	V0	46	18	39.1	0.019
	V4	29	4	13.8
Obstruction	N	62	14	22.6	0.005
	Y	13	8	61.5
Rudimentary horn	N	69	18	26.1	0.036
	Y	6	4	66.7