title: Assessment of myometrial invasion at the invasion site of an endometrial carcinoma by ultrasonography along with an intrauterine catheter.
abstract: OBJECTIVE
  To evaluate by transvaginal ultrasonography (TVU) the thickness of the intact myometrium at the presumed tumor-origin site and to establish criteria for a half myometrial invasion.
  
  
  METHODS
  A total of 19 successive patients with endometrial cancer who were treated between January 1, 1997, and January 31, 1998, participated in this study. TVU mode B with and without the use of an intrauterine silicon catheter was performed.
  
  
  RESULTS
  Using a catheter, the origin site was correctly detected in 15 cases (79%). The best criterion for half myometrial invasion was a 6-mm thickness of the intact myometrium at the origin site. The sensitivity/specificity/accuracy of TVU with the use of a catheter in cases with the correct estimated origin site, were 1.00/0.67/0.86 for myometrial invasion < 1/2, and 0.67/1.00/0.86 for myometrial invasion > or = 1/2.
  
  
  CONCLUSIONS
  It is of value to use 6-mm as the criterion for the thickness of the intact myometrium at the estimated tumor-origin site in connection with TVU with the use of a catheter for preoperatively assessing half myometrial invasion.
authors.affiliation: Department of Obstetrics and Gynecology, Okayama University Medical School, Japan.
authors.forename: I A
authors.initials: IA
authors.lastname: Perdomo
authors.forename: Y
authors.initials: Y
authors.lastname: Miyagi
authors.forename: S
authors.initials: S
authors.lastname: Yamada
authors.forename: K
authors.initials: K
authors.lastname: Kawanishi
authors.forename: J
authors.initials: J
authors.lastname: Yamamoto
authors.forename: Y
authors.initials: Y
authors.lastname: Miyagi
authors.forename: A
authors.initials: A
authors.lastname: Hongo
authors.forename: J
authors.initials: J
authors.lastname: Kodama
authors.forename: M
authors.initials: M
authors.lastname: Yoshinouchi
authors.forename: Y
authors.initials: Y
authors.lastname: Kobashi
authors.forename: T
authors.initials: T
authors.lastname: Kudo
mesh_terms: D000328:Adult; D000368:Aged; D002404:Catheterization; D016889:Endometrial Neoplasms / Q000000981:diagnostic imaging* / Q000473:pathology; D005260:Female; D006801:Humans; D008875:Middle Aged; D009215:Myometrium / Q000000981:diagnostic imaging* / Q000473:pathology; D009361:Neoplasm Invasiveness; D012680:Sensitivity and Specificity; D014463:Ultrasonography