[Diameter of the external urethral meatus in boys].

The urethral meatus caliber was evaluated in 368 boys from 0 to 14 years. The material was divided into 8 age groups. The length and circumference of penis, height and weight were also measured in each investigated patient. Arithmetic mean of urethral meatus caliber was calculated in two-years' age intervals. The relationship between the meatus caliber and other body parameters has been analysed. The equations of linear regression of meatal caliber according to the length and circumference of penis have been established. The urethral meatus caliber in investigated boys ranged from 8 to 23 Charr . This size was increasing gradually according to the age of patients. The highest correlation was found out between the meatus caliber and the length of penis.