STUDY OBJECTIVE: To analyse risk factors for @entity42 . DESIGN: Between 1984 and 1994 a case-control study was carried out. Cases were 225 @entity1 aged less than 65 year with a histologically confirmed diagnosis of @entity42 admitted to a network of obstetrics and gynaecology departments in Milan. Controls were a random sample of 450 @entity1 admitted for acute conditions that were not gynaecological, hormonal or neoplastic. They were interviewed within the framework of a case-control study of @entity18057 . SETTING: Network of hospitals in the greater Milan area, Italy. MAIN RESULTS: The risk of @entity42 was higher in more educated @entity1 than in @entity1 with fewer than seven years of schooling. The odds ratios (OR) for seromucinous @entity42 were 1.3 and 1.4 respectively in @entity1 reporting 7-11 and > or = 12 years of schooling, and the trend in risk was statistically significant (chi(2)1 trend 5.20, p < 0.05). There was no clear relationship between the risk of seromucinous @entity42 and marital status, age at first marriage, oral contraceptive use, smoking or body mass index. In comparison with @entity1 reporting menstrual cycles lasting < 28 days, the risks of seromucinous cysts were 1.6, 2.6, and 2.5 respectively in @entity1 reporting cycles lasting 28-30, > or = 31 days, or with totally irregular ones. Among ever married @entity1 , nine cases and two controls reported difficulty in conception, and the corresponding OR for seromucinous cysts was 17.7 (95% confidence interval 4.2, 83.8). CONCLUSIONS: The risk of @entity5 is greater in more educated @entity1 and in @entity1 with a history of @entity249 and with long or irregular menstrual cycles.

Risk factors for XXXX in northern Italy.

@entity1 :: ('9606', 'Species') :: ['women'] @entity249 :: ('MESH:D007246', 'Disease') :: ['infertility'] @entity5 :: ('MESH:D009369', 'Disease') :: ['seromucinous benign ovarian tumours'] @entity42 :: ('MESH:D010048', 'Disease') :: ['seromucinous benign ovarian cysts', 'ovarian cysts', 'benign seromucinous ovarian cysts'] @entity18057 :: ('MESH:D005833', 'Disease') :: ['female genital neoplasms']
@entity42 :: (MESH:D010048,Disease) :: ['seromucinous benign ovarian cysts']
