title: Ultrasonographic appearance of the endometrium in natural and stimulated in-vitro fertilization cycles and its correlation with outcome.
abstract: Ultrasonographic evaluation of the endometrium in 56 IVF patients was performed prospectively. Endometrial thickness and pattern were analysed in 18 natural-cycle and 38 stimulated-cycle patients. Thickness was measured from the echogenic interface of the endometrium-myometrium junction on a transverse section at the level of the fundus. Patterns were classified as A (homogeneous, hyperechogenic), B (mixed, with an outer hyperechogenic and inner hypoechogenic layer) or C (fluid-filled cavum with ring configuration). The thickness and pattern distributions were similar in natural- and stimulated-cycle patients. There was no correlation between thickness and serum oestradiol levels, the diameter of the largest follicle or the pregnancy outcome in either group. However, the occurrence of endometrial pattern A on the day prior to oocyte retrieval had a predictive value of 100% for a non-conceptional cycle. In contrast, pattern B occurred in a significantly greater proportion of pregnant than non-pregnant patients.
authors.affiliation: Howard and Georgeanna Jones Institute for Reproductive Medicine, Department of Obstetrics and Gynecology, Eastern Virginia Medical School, Norfolk 23507.
authors.forename: J
authors.initials: J
authors.lastname: Ueno
authors.forename: S
authors.initials: S
authors.lastname: Oehninger
authors.forename: R G
authors.initials: RG
authors.lastname: Brzyski
authors.forename: A A
authors.initials: AA
authors.lastname: Acosta
authors.forename: C B
authors.initials: CB
authors.lastname: Philput
authors.forename: S J
authors.initials: SJ
authors.lastname: Muasher
mesh_terms: D000328:Adult; D010064:Embryo Implantation / Q000187:drug effects / Q000502:physiology*; D004717:Endometrium / Q000033:anatomy & histology / Q000000981:diagnostic imaging*; D005260:Female; D005307:Fertilization in Vitro; D006062:Gonadotropins / Q000627:therapeutic use; D006801:Humans; D010062:Ovulation Induction / Q000379:methods; D011247:Pregnancy; D011256:Pregnancy Outcome; D011446:Prospective Studies; D012016:Reference Values; D012044:Regression Analysis; D014463:Ultrasonography
chemical_list: D006062:Gonadotropins