title: Prenatal diagnosis of pyriform sinus fistula: case report and literature review.
abstract: We describe a case of prenatal diagnosis of a pharyngeal cyst as a pyriform sinus fistula on the findings of ultrasonography and magnetic resonance imaging.
authors.affiliation: Department of Obstetrics and Gynecology, St. Marianna University School of Medicine Kanagawa, Japan.
authors.forename: Jun
authors.initials: J
authors.lastname: Kakogawa
authors.affiliation: Department of Obstetrics and Gynecology, St. Marianna University School of Medicine Kanagawa, Japan.
authors.forename: Takafumi
authors.initials: T
authors.lastname: Nako
authors.affiliation: Department of Obstetrics and Gynecology, St. Marianna University School of Medicine Kanagawa, Japan.
authors.forename: Suguru
authors.initials: S
authors.lastname: Igarashi
authors.affiliation: Department of Obstetrics and Gynecology, St. Marianna University School of Medicine Kanagawa, Japan.
authors.forename: Shin
authors.initials: S
authors.lastname: Nakamura
authors.affiliation: Department of Obstetrics and Gynecology, St. Marianna University School of Medicine Kanagawa, Japan.
authors.forename: Mamoru
authors.initials: M
authors.lastname: Tanaka
keywords: Ex utero intrapartum treatment; magnetic resonance imaging; prenatal diagnosis; pyriform sinus fistula; ultrasonography