, Volume 12, Issue 1, pp 32-34

Familial endometriosis

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The study aimed to identify families with endometriosis and to document disease seventy within the families and the clinical characteristics of the affected women.


Two hundred and thirty women with surgically confirmed endometriosis in 100 families were identified. The families consisted of 19 mother-daughter pairs, 1 set of cousins and 56 sister pairs. There were 5 families with 3 affected sisters, 1 family with 5 affected sisters, and 18 families with ≥3 affected members in more than one generation. The mean age at the onset of symptoms and the mean age at surgical diagnosis was 22.1±8.8 SD (range 10–46) and 31.8±7.9 SD (range 15–56) years respectively. Seventy-nine women (34.3%) had revised AFS Stage I–II disease, and 151 (65.7%) had revised AFS Stage III–IV disease.


The study confirms a familial tendency for endometriosis and supports the hypothesis that endometriosis has a genetic basis.