Fig. 6
From: Clinical presentation of perineal endometriosis and prognostic nomogram after surgical resection
Kaplan–Meier survival curves of derivation cohort. The Kaplan–Meier method showed that there was a statistically significant difference in recurrence probability between A the low-risk group and the high-risk group (P < 0.001), B whether multiple lesions (P < 0.001) and C whether anal sphincter involvement (P < 0.001)