title: Spontaneous rupture of an unscarred gravid uterus in a primigravid woman at 32 weeks of gestation.
abstract: Uterine rupture usually occurs in a scarred uterus, especially secondary to prior cesarean section. Antepartum uterine rupture in an unscarred uterus is extremely rare. We report a case of spontaneous rupture of an unscarred gravid uterus at 32 weeks of gestation in a primigravid woman. Ultrasonography and magnetic resonance imaging showed a bulging cystic lesion communicating with the intrauterine cavity. Operative findings during emergent cesarean section revealed uterine perforation in the right cornual area and a prolapsed, nonbleeding amniotic sac. The left cornual area was also focally thin. An arcuate uterus was suspected based on follow-up hysterosalpingography. Antepartum uterine rupture tends to occur in the uterine cornual area. In this case, Müllerian duct anomalies may have been associated with focal myometrial defects.
authors.affiliation: Department of Obstetrics and Gynecology, Faculty of Life Science, Kumamoto University, 1-1-1 Honjo, Chuo-ku, Kumamoto 860-8556, Japan.
authors.forename: Etsuko
authors.initials: E
authors.lastname: Mizutamari
authors.affiliation: Department of Obstetrics and Gynecology, Faculty of Life Science, Kumamoto University, 1-1-1 Honjo, Chuo-ku, Kumamoto 860-8556, Japan.
authors.forename: Tomoko
authors.initials: T
authors.lastname: Honda
authors.affiliation: Department of Obstetrics and Gynecology, Faculty of Life Science, Kumamoto University, 1-1-1 Honjo, Chuo-ku, Kumamoto 860-8556, Japan.
authors.forename: Takashi
authors.initials: T
authors.lastname: Ohba
authors.affiliation: Department of Obstetrics and Gynecology, Faculty of Life Science, Kumamoto University, 1-1-1 Honjo, Chuo-ku, Kumamoto 860-8556, Japan.
authors.forename: Hidetaka
authors.initials: H
authors.lastname: Katabuchi
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