Comparison of Penile Length in Fars, Turkmen and Sistani Newborns

Micropenis may be the most important sign of hypogonadism or pituitary hypofunction in neonatal period and after that. Since there is no data concerning the normal penile length and its distribution in different races in Iran، so، the aim of this study was to determine the penile length in Fars، Turkmen and Sistani newborns.

In this cross-sectional study، the stretched length of 427 male term infants (166 Fars، 129 Turkmen and 132 Sistani neonates) were assessed in the Dezyani affiliated hospital of Gorgan، Iran. Penile length measurements were done by a well-educated nurse in nursery ward in first 72 hours of their life by VYCON ruler. Penile length less than 23. 3 mm was defined as micropenis.

In this study the mean penile length was 32. 1± 3. 5 mm. Mean penile lengths in Fars، Turkmen and Sistani neonates were 31. 8±3. 9، 32. 3±3. 3 and 32. 3±3. 3 mm، respectively. There was no significant difference between races considering the mean penile length. One infant (0. 23 %) was diagnosed for micropenis.

The results of this study showed that ethnicity had no significant effect on the penile length in newborn infants and the prevalence of micropenis was low in the present study.