Penile length nomogram for Asian Indian prepubertal boys

Area of Science:

• Pediatric Endocrinology
• Human Growth and Development
• Anthropometry

Background:

• Penile length-for-age nomograms are vital for identifying endocrine and genetic disorders in prepubertal boys.
• Limited data exists for penile length beyond the neonatal period, especially for Asian Indian populations.
• A specific nomogram for Asian Indian boys is lacking.

Purpose of the Study:

• To establish penile length-for-age reference values for prepubertal Asian Indian boys.
• To provide a tool for the early recognition of abnormal phallic size in this demographic.
• To define normative ranges for stretched penile length (SPL) in Indian boys aged 0-10 years.

Main Methods:

• A cross-sectional study involving 200 prepubertal Indian boys aged 0-10 years.
• Boys were grouped into ten 1-year age slots (0-1 to 9-10 years).
• Stretched penile length (SPL) was measured to establish normal ranges (mean ± 2 SD) and define micropenis/macropenis cut-offs (mean ± 2.5 SD).

Main Results:

• Penile length shows rapid growth up to age 4 years.
• A slower rate of penile length increase is observed after 4 years of age.
• Reference values for penile length-for-age were established for the study population.

Conclusions:

• This study presents the first penile length-for-age reference values for Asian Indian boys aged 0-10 years.
• These data serve as a valuable resource for clinical assessment and diagnosis.
• The findings contribute to the understanding of penile growth patterns in this specific ethnic group.