title: Diameter-by-age reference curves for the uterine cervix by computerized tomography.
abstract: OBJECTIVE
  To create diameter-by-age reference curves for the uterine cervix using computerized tomographic studies.
  
  
  METHODS
  Measurements of the anterior-posterior (AP) and lateral diameters of nonpathological cervices were made at the level of the vaginal fornices in 499 computerized tomographic studies. Patients were grouped by 10-year age intervals. For each age group, median AP and lateral cervical diameters were calculated, as were 10th and 90th percentile values. Values for the 3 curves were smoothed across age categories using second-order polynomial regression procedures.
  
  
  RESULTS
  The median AP diameter was 26 mm (range, 15-45 mm), and the median lateral diameter was 32 mm (range, 20-70 mm). For both measurements, the range of values between the 10th and 90th percentiles decreased with increasing age, creating funnel-shaped plots.
  
  
  CONCLUSIONS
  Radiological measurements of cervical diameters and comparison to standard curves may contribute information in the evaluation of uterine cervical pathology or may heighten awareness of pathologies not previously identified.
authors.affiliation: Department of Obstetrics and Gynecology, Barzilai Medical Center, Ashkelon, Israel. gemer@barzi.health.gov.il
authors.forename: Ofer
authors.initials: O
authors.lastname: Gemer
authors.forename: Michael
authors.initials: M
authors.lastname: Huerta
authors.forename: Ala
authors.initials: A
authors.lastname: Simonovsky
authors.forename: Lina
authors.initials: L
authors.lastname: Linov
authors.forename: Eyal
authors.initials: E
authors.lastname: Anteby
authors.forename: Ofer
authors.initials: O
authors.lastname: Lavie
mesh_terms: D000328:Adult; D017677:Age Distribution; D000368:Aged; D000369:Aged, 80 and over; D000375:Aging; D000465:Algorithms; D002584:Cervix Uteri / Q000033:anatomy & histology / Q000000981:diagnostic imaging*; D003198:Computer Simulation; D005260:Female; D006801:Humans; D007557:Israel / Q000453:epidemiology; D008875:Middle Aged; D008954:Models, Biological; D012016:Reference Values; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D014057:Tomography, X-Ray Computed / Q000379:methods* / Q000592:standards* / Q000706:statistics & numerical data; D055815:Young Adult