Penile size in term newborn infants

Akin Y., Ercan O., Telatar B., Tarhan F.

TURKISH JOURNAL OF PEDIATRICS, vol.53, no.3, pp.301-307, 2011 (SCI-Expanded) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 53 Issue: 3
  • Publication Date: 2011
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.301-307
  • Istanbul University Affiliated: Yes


The objective of this study was to establish standard penile size in healthy full-term Turkish newborns and to evaluate the relation between penile and other anthropometric measures. For this prospective study, stretched penile length (SPL) and penile diameter (PD) of live-borns delivered in our hospital between September 2007-December 2008 were measured, and their birthweight, length and head circumference were recorded. Penile versus other anthropometric correlations were determined by Pearson analyses, followed by linear regression. In 1217 full-term subjects, mean SPL was 3.16 +/- 0.39 cm (+/- 2.5 SD=2.19-4.14 cm), and mean PD was 1.21 +/- 0.11 cm (+/- 2.5 SD=0.93-1.49 cm). Linear regression analysis showed a strong correlation of SPL (p=0.0001) to height, and PD to height (p=0.0001) and birthweight (p=0.002). Formulas were calculated for predicted individual values for PL and PD of newborns. In conclusion, there is a correlation between neonatal anthropometric measurements and penile anthropometry. Mean anthropometric differences of various ethnicities may account for the differences in mean SPL and PD among various ethnic populations.