Department of Urology, Pusan National University Hospital, Busan, Korea.
Department of Urology, Pusan National University Yangsan Hospital, Yangsan, Korea.
Investig Clin Urol. 2021 May;62(3):324-330. doi: 10.4111/icu.20200495.
To determine references for penile circumference according to age in prepubertal children and whether this measurement can be used as a basic penile parameter along with stretched penile length in prepubertal children.
A total of 750 children (mean age, 4.2±3.4 years) aged under 14 years without penile problems were enrolled in this study. Children with penile or testicular abnormalities were excluded. All data were gathered at the outpatient clinic by a single pediatric urologist from July 2017 to April 2020. Penile parameters (baseline and stretched penile length, penile circumference) and testicular volumes were measured by using an elastic ruler and a Prader orchidometer, respectively.
Mean baseline and stretched penile lengths were 3.0±1.0 cm and 4.2±1.0 cm, respectively. The mean penile circumference was 4.2±0.9 cm. The stretched penile length was similar to penile circumference (p=0.425). This similarity was found for each age group except for the 0-1-year-old and 3-4-year-old age groups (p=0.001 and p=0.034, respectively). As children grow into adolescence, stretched penile length increases significantly compared to penile circumference.
Penile circumference increased with age like stretched penile length and testicular volume in prepubertal children. Stretched penile length and penile circumference were found to be similar. This study can be used as a basic reference for penile circumference values in prepubertal children.
确定青春期前儿童阴茎周长的参考值，并探讨该测量值是否可与青春期前儿童的伸展阴茎长度一起作为基本阴茎参数使用。
本研究共纳入 750 名（平均年龄 4.2±3.4 岁）无阴茎问题的 14 岁以下儿童。排除有阴茎或睾丸异常的儿童。所有数据均由一名小儿泌尿科医生于 2017 年 7 月至 2020 年 4 月在门诊收集。采用弹性尺测量阴茎参数（基础和伸展阴茎长度、阴茎周长）和睾丸体积。
平均基础和伸展阴茎长度分别为 3.0±1.0cm 和 4.2±1.0cm，平均阴茎周长为 4.2±0.9cm。伸展阴茎长度与阴茎周长相似（p=0.425）。除 0-1 岁和 3-4 岁年龄组外（p=0.001 和 p=0.034），每个年龄组均存在这种相似性。随着儿童进入青春期，伸展阴茎长度比阴茎周长显著增加。
青春期前儿童的阴茎周长与伸展阴茎长度和睾丸体积一样随年龄增长而增加。伸展阴茎长度和阴茎周长相似。本研究可作为青春期前儿童阴茎周长值的基本参考。
