title: Lateral distribution of nonendometriotic benign ovarian cysts.
abstract: To investigate the left- and right-sided distribution of nonendometriotic benign ovarian cysts, data were collected on 406 women undergoing first-line surgery for tumours with various histotypes. Considering the unilateral cysts, the observed proportion of left lesions was 65/129 (50.4%) in the serous, 38/79 (48.1%) in the mucinous, 59/134 (44.0%) in the dermoid, 11/21 (52.4%) in the parovarian, and 3/7 (42.9%) in the miscellaneous cysts group, without significant differences from the expected 50%. This contrasts with the finding of a significantly more frequent development of endometriomas on the left ovary, and suggests that the pathogenesis of endometriotic and nonendometriotic cysts is different.
authors.affiliation: Department of Obstetrics and Gynaecology Luigi Mangiagalli, University of Milan, Italy.
authors.forename: P
authors.initials: P
authors.lastname: Vercellini
authors.forename: A
authors.initials: A
authors.lastname: Pisacreta
authors.forename: S
authors.initials: S
authors.lastname: Vicentini
authors.forename: G
authors.initials: G
authors.lastname: Stellato
authors.forename: A
authors.initials: A
authors.lastname: Pesole
authors.forename: P G
authors.initials: PG
authors.lastname: Crosignani
mesh_terms: D000328:Adult; D000367:Age Factors; D005260:Female; D006801:Humans; D010048:Ovarian Cysts / Q000473:pathology*; D010053:Ovary / Q000473:pathology*; D012189:Retrospective Studies