Normal length of fetal kidneys

Sonographic study in 397 obstetric patients

Harris Cohen, J. Cooper, P. Eisenberg, F. S. Mandel, B. R. Gross, M. A. Goldman, E. Barzel, K. F. Rawlinson

Research output: Contribution to journalArticle

66 Citations (Scopus)

Abstract

This study was done to measure normal lengths of fetal kidneys sonographically during pregnancy. Knowledge of these measurements may allow earlier diagnosis of a variety of abnormalities. The greatest length of each of 498 kidneys in 397 consecutive fetuses between 18 and 41 weeks gestation was measured on sonograms. Gestational ages were determined by last menstrual period and biometry; significant discrepancies led to case exclusion. Abnormal fetuses, twins, offspring of diabetic mothers, and fetuses with renal pelvic dilatation of 4 mm or greater were excluded to avoid any questionable measurements. The results show that mean lengths are greater and confidence intervals are wider than previously reported. Renal lengths are similar to those reported in premature and full-term neonates. Strong correlation exists between renal length and gestational age, determined by biparietal diameter, femoral length, and abdominal circumference, and an average of the three. No significant difference was found between right and left renal lengths in fetuses in whom both kidneys were imaged. Average renal lengths are significantly different when compared across the range of gestational ages (p < .001). No correlation is seen (r = .00) between parental height or weight and fetal renal length. Our results show that fetal renal lengths are longer than previously reported.

Original languageEnglish (US)
Pages (from-to)545-548
Number of pages4
JournalAmerican Journal of Roentgenology
Volume157
Issue number3
DOIs
StatePublished - Jan 1 1991
Externally publishedYes

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Obstetrics
Kidney
Fetus
Gestational Age
Biometry
Pregnancy
Fetal Weight
Thigh
Early Diagnosis
Dilatation
Mothers
Newborn Infant
Confidence Intervals

All Science Journal Classification (ASJC) codes

  • Radiology Nuclear Medicine and imaging

Cite this

Cohen, H., Cooper, J., Eisenberg, P., Mandel, F. S., Gross, B. R., Goldman, M. A., ... Rawlinson, K. F. (1991). Normal length of fetal kidneys: Sonographic study in 397 obstetric patients. American Journal of Roentgenology, 157(3), 545-548. https://doi.org/10.2214/ajr.157.3.1872242

Normal length of fetal kidneys : Sonographic study in 397 obstetric patients. / Cohen, Harris; Cooper, J.; Eisenberg, P.; Mandel, F. S.; Gross, B. R.; Goldman, M. A.; Barzel, E.; Rawlinson, K. F.

In: American Journal of Roentgenology, Vol. 157, No. 3, 01.01.1991, p. 545-548.

Research output: Contribution to journalArticle

Cohen, H, Cooper, J, Eisenberg, P, Mandel, FS, Gross, BR, Goldman, MA, Barzel, E & Rawlinson, KF 1991, 'Normal length of fetal kidneys: Sonographic study in 397 obstetric patients', American Journal of Roentgenology, vol. 157, no. 3, pp. 545-548. https://doi.org/10.2214/ajr.157.3.1872242
Cohen, Harris ; Cooper, J. ; Eisenberg, P. ; Mandel, F. S. ; Gross, B. R. ; Goldman, M. A. ; Barzel, E. ; Rawlinson, K. F. / Normal length of fetal kidneys : Sonographic study in 397 obstetric patients. In: American Journal of Roentgenology. 1991 ; Vol. 157, No. 3. pp. 545-548.
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