title: An unusual case of a vesicovaginal stone.
abstract: We report a case of an unusual vesicovaginal stone. The dumb-bell-shaped stone created a ball valve effect in the fistula, therefore giving rise to only mild urinary leakage despite the large size of the fistula.
authors.affiliation: Department of Obstetrics and Gynaecology, Prince of Wales Hospital, The Chinese University of Hong Kong, Hong Kong. MWPang@cuhk.edu.hk
authors.forename: M W
authors.initials: MW
authors.lastname: Pang
authors.forename: H
authors.initials: H
authors.lastname: Lok
authors.forename: H Y
authors.initials: HY
authors.lastname: Tsui
authors.forename: W S
authors.initials: WS
authors.lastname: Wong
authors.forename: S K
authors.initials: SK
authors.lastname: Yip
mesh_terms: D002137:Calculi / Q000473:pathology* / Q000601:surgery; D005260:Female; D006801:Humans; D007813:Laparotomy; D014549:Urinary Incontinence; D014719:Vesicovaginal Fistula / Q000473:pathology* / Q000601:surgery