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Updated: May 21, 2026
03:49
Anogenital Distance and Perineal Measurements of the Pelvic Organ Prolapse (POP) Quantification System
Published on: September 20, 2018
Correlation between prenatal and postnatal penile and clitoral measurements
Reuven Sharony1, Yoram A Bental, Ori Eyal
1The Genetic Institute, Meir Medical Center, Kfar Saba, Israel.
Journal of Clinical Ultrasound : JCU
|June 27, 2012
Summary
Prenatal ultrasound measurements of penile and clitoral length accurately predict postnatal sizes. This study found that prenatal penile width measurements do not offer additional predictive value for infant genital size.
Area of Science:
- Medical imaging
- Fetal development
- Pediatric endocrinology
Background:
- Limited data exist on the correlation between prenatal and postnatal external genitalia measurements.
- Prenatal ultrasound (US) has the potential to predict postnatal measurements, but this has not been established for penile and clitoral sizes.
- Understanding this correlation can aid in assessing fetal growth and development.
Purpose of the Study:
- To correlate prenatal and postnatal penile and clitoral measurements.
- To evaluate the predictive accuracy of prenatal ultrasound for postnatal genital size.
- To determine if prenatal penile width measurement offers advantages over length for prediction.
Main Methods:
- Longitudinal study design.
- High-resolution ultrasound measurements of fetal penis and clitoris between 14 and 29 gestational weeks.
- Postnatal external genitalia measurements within the first week of life, with all measurements taken twice consecutively.
Main Results:
- Paired prenatal and postnatal measurements were obtained from 46 males and 48 females.
- Significant correlation was found between prenatal and postnatal penile length (p < 0.05).
- Significant correlation was observed between prenatal and postnatal clitoral length (p < 0.05).
Conclusions:
- Prenatal ultrasound measurements of penile and clitoral length are reliable predictors of postnatal measurements.
- Prenatal penile width measurements did not provide additional predictive information beyond length.
- Prenatal US is a valuable tool for assessing potential postnatal genital dimensions.
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