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Background and purpose: Anogenital distance is an accepted indicator for endogenous or environmental effects of androgens on development of reproductive system in fetus and newborns. This study was done to determine the relationship between penile length and anogenital distance in Iranian newborns. Material and Methods: In this cross-sectional study stretched penile length (PL) and anogenital distance (AGD) were measured in 427 healthy male newborn infants born in a Teaching Hospital (in north of Iran). Other variables included the age of mothers, and weight, height, and head circumference of neonates. Normal distribution of variables was measured by Shapiro-Wilk and data was analyzed using Pearson Correlation tests Results: The mean of PL was 32.1±3.5 mm and the mean of AGD was 24.5±2.5mm. A weak correlation was observed between PL and AGD (r=0.097, p=0.046). Conclusion: The correlation between penile length and AGD showed that, AGD could be also used in assessing the genital system and even as a common indicator to assess the genital system in both sexes

Keywords: penile length, anogenital, distance, term newborn, male

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