title: Influence of oral contraceptives on fasting gallbladder volume.
abstract: A total of 615 healthy fertile women (518 pill users and 97 non-users) were examined by real-time ultrasonography for fasting gallbladder volume, gallstones and biliary dysmorphism. None of the six examined combinations of oral contraceptives appeared to influence fasting gallbladder volume significantly. When fasting gallbladder volumes were reanalyzed according to the presence or absence of recognized biliary risk factors, significant modifications were detected, in both pill users and non-users. These changes related only to age and parity. Relative risks of cholelithiasis and biliary dysmorphism were not affected by contraceptive treatment.
authors.affiliation: Department of Obstetrics and Gynecology, University of Ferrara, Italy.
authors.forename: F
authors.initials: F
authors.lastname: Pansini
authors.forename: C
authors.initials: C
authors.lastname: Campobasso
authors.forename: L
authors.initials: L
authors.lastname: Giorgetti
authors.forename: G C
authors.initials: GC
authors.lastname: Locorotondo
authors.forename: G
authors.initials: G
authors.lastname: Agnello
authors.forename: P
authors.initials: P
authors.lastname: Bassi
authors.forename: D
authors.initials: D
authors.lastname: Costantino
authors.forename: D
authors.initials: D
authors.lastname: Sighinolfi
authors.forename: V
authors.initials: V
authors.lastname: Alvisi
authors.forename: G
authors.initials: G
authors.lastname: Mollica
mesh_terms: D000293:Adolescent; D000328:Adult; D001660:Biliary Tract Diseases / Q000139:chemically induced / Q000000981:diagnostic imaging; D002769:Cholelithiasis / Q000139:chemically induced / Q000000981:diagnostic imaging; D003276:Contraceptives, Oral / Q000009:adverse effects* / Q000494:pharmacology; D005215:Fasting; D005260:Female; D005704:Gallbladder / Q000000981:diagnostic imaging* / Q000187:drug effects; D006801:Humans; D008875:Middle Aged; D014463:Ultrasonography
chemical_list: D003276:Contraceptives, Oral