title: Antenatal sonographic detection of vesicoureteral reflux. A case report.
abstract: We report a case with vesicoureteral reflux (VUR), diagnosed antenatally. A 31-year-old Japanese woman was referred at 37 weeks' gestation because of the fetus having unilateral renal pelvis dilatation. The real-time ultrasound revealed a right renal pyelectasia with periodic changes in size over intervals lasting several minutes. The simultaneous examinations of both anteroposterior dimension of the renal pelvis and the ellipse size of urine-filled bladder area demonstrated that they varied in size in a reciprocal fashion, leading us to diagnose the fetus as having VUR. Postnatally, bilateral VUR was confirmed by the voiding cystogram. This case has typical ultrasonographic findings of fetal VUR, in which both the renal pelvis and urinary bladder dimensions change periodically in a reciprocal manner with each other, when the reflux really occurred.
authors.affiliation: Maternity and Perinatal Care Unit, Kyushu University Hospital, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan. satoh@med.kyishu-u.ac.jp
authors.forename: Shoji
authors.initials: S
authors.lastname: Satoh
authors.forename: Shigeru
authors.initials: S
authors.lastname: Inatomi
authors.forename: Masayuki
authors.initials: M
authors.lastname: Kubota
authors.forename: Sachiyo
authors.initials: S
authors.lastname: Suita
authors.forename: Hitoo
authors.initials: H
authors.lastname: Nakano
mesh_terms: D000328:Adult; D005260:Female; D006801:Humans; D006869:Hydronephrosis / Q000000981:diagnostic imaging; D007668:Kidney / Q000000981:diagnostic imaging; D008297:Male; D011247:Pregnancy; D016216:Ultrasonography, Prenatal; D001743:Urinary Bladder / Q000000981:diagnostic imaging; D014718:Vesico-Ureteral Reflux / Q000000981:diagnostic imaging*