title: Overview of Cervical Insufficiency: Diagnosis, Etiologies, and Risk Factors.
abstract: The diagnosis of cervical insufficiency can be made in women with or without prior pregnancy losses. Cervical insufficiency has been defined by transvaginal ultrasound cervical length <25 mm before 24 weeks in women with prior pregnancy losses or preterm births at 14 to 36 weeks, or by cervical changes detected on physical examination before 24 weeks of gestation.
authors.affiliation: *Department of Obstetrics and Gynecology, Division of Maternal-Fetal Medicine, Thomas Jefferson University, Philadelphia, Pennsylvania †Department of Obstetrics and Gynecology, Division of Maternal-Fetal Medicine, Baylor College of Medicine, Houston, Texas.
authors.forename: Amanda
authors.initials: A
authors.lastname: Roman
authors.forename: Anju
authors.initials: A
authors.lastname: Suhag
authors.forename: Vincenzo
authors.initials: V
authors.lastname: Berghella
mesh_terms: D054791:Cervical Length Measurement; D005260:Female; D005865:Gestational Age; D006801:Humans; D010808:Physical Examination; D011247:Pregnancy; D012307:Risk Factors; D002581:Uterine Cervical Incompetence / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000209:etiology* / Q000517:prevention & control