Correlation between prenatal and postnatal penile and clitoral measurements.
BACKGROUND
A correlation between prenatal and postnatal penile and clitoral sizes has not been reported. These data would substantiate the ability of prenatal ultrasound (US) scan to predict postnatal measurements. The aims were to correlate prenatal and postnatal penile and clitoral measurements and to ascertain the possible advantage of using prenatal penile width rather than length to predict postnatal measurements.


METHODS
This was a longitudinal study. Fetal penis and clitoris were measured by high-resolution US between gestational weeks 14 and 29. Postnatal measurements of external genitalia were performed during the first postnatal week. All measurements were performed twice consecutively. A correlation between the measurements sets was sought.


RESULTS
Paired prenatal and postnatal measurements were performed on 46 males and 48 females. Prenatal penile and clitoral length values correlated significantly with postnatal length at p < 0.05 each.


CONCLUSIONS
Prenatal US findings appear to be reliable indicators of postnatal penile and clitoral length measurements. Penile width measurement did not add new information.
The Genetic Institute, Meir Medical Center, Kfar Saba, Israel.
Reuven
R
Sharony
Yoram A
YA
Bental
Ori
O
Eyal
Tal
T
Biron-Shental
Meir
M
Weisbrod
Yacov
Y
Shiff
Naomi
N
Weintrob
D000293:Adolescent; D000328:Adult; D001837:Body Weights and Measures; D002987:Clitoris / Q000033:anatomy & histology / Q000000981:diagnostic imaging*; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D008137:Longitudinal Studies; D008297:Male; D008875:Middle Aged; D010413:Penis / Q000033:anatomy & histology / Q000000981:diagnostic imaging*; D011247:Pregnancy; D012016:Reference Values; D016216:Ultrasonography, Prenatal; D055815:Young Adult