title: Uterine diverticulum.
abstract: BACKGROUND
  Uterine diverticula complicating pregnancy rarely are reported and should be differentiated from sacculation of pregnancy and other pelvic masses.
  
  
  METHODS
  A primigravida presented for a routine second-trimester anatomical survey ultrasound examination at 22 weeks of gestation. She initially was thought to have a bicornuate, bicolic uterus with bulging membranes. However, on examination, one normal-appearing cervix was found, and no membranes were visible. Magnetic resonance imaging demonstrated a posterolateral uterine diverticulum. At 31 weeks of gestation, she had premature rupture of membranes and onset of labor. Delivery by cesarean was performed, and the presence of a uterine diverticulum was confirmed.
  
  
  CONCLUSIONS
  Uterine diverticula are rare anomalies in the pregnant uterus and should be considered in the differential diagnosis of a fluid-filled pelvic mass. With close observation, successful pregnancy outcome can be achieved.
authors.affiliation: From the University of Washington Medical Center, Seattle, Washington.
authors.forename: Prabhakar
authors.initials: P
authors.lastname: Rajiah
authors.forename: Katherine L
authors.initials: KL
authors.lastname: Eastwood
authors.forename: Martin L D
authors.initials: MLD
authors.lastname: Gunn
authors.forename: Manjiri
authors.initials: M
authors.lastname: Dighe
mesh_terms: D002585:Cesarean Section; D004240:Diverticulum / Q000150:complications / Q000000981:diagnostic imaging*; D005260:Female; D005322:Premature Rupture of Fetal Membranes; D006801:Humans; D011247:Pregnancy; D011248:Pregnancy Complications / Q000000981:diagnostic imaging*; D016216:Ultrasonography, Prenatal; D014599:Uterus / Q000002:abnormalities*; D055815:Young Adult