We evaluated preputial development in Japanese boys.
Materials and Methods:
Preputial retractability and formation of a tight ring were evaluated in 603 Japanese boys 0 to 15 years old.
The incidence of a completely retractable prepuce gradually increased from 0 percent at age 6 months to 62.9 percent by 11 to 15 years, while that of a tight ring decreased with age from 84.3 to 8.6 percent. Nine boys had balanoposthitis but none had a symptomatic urinary tract infection.
Incomplete separation of the prepuce is common and normal in neonates and infants, and preputial separation progresses until adolescence. Awareness of these findings will eliminate unnecessary circumcision in boys.
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Department of Pediatric Surgery and Urology, Fujiwara Memorial Hospital and Akita University School of Medicine, Akita, Japan.