What are the differences between micropenis and hidden penis? How is it treated?

Patient's question:

When my son was born, he had a small penis. Now, after going to the hospital for a diagnosis, the doctor said it was "addiction penis" and recommended that we have surgery.

Doctor's answer:

Hello, hidden penis looks very similar to micropenis and is often mistaken for excessive prepuce. However, they are two completely different conditions. The outer skin of a hidden penis is not excessively long but rather too short, and the penile body is not small but normal.
Concept of micropenis:
1. Length: Less than 2.5 cm before puberty, less than 5 cm during puberty.
Circumference: Less than 1 cm before puberty, less than 7.5 cm during puberty.
2. Underdeveloped secondary sexual characteristics: Such as vocal cords, facial hair, axillary hair, pubic hair, and Adam's apple.
3. Abnormal development of genital organs, sexual dysfunction, inability to erect, absence of sperm, and infertility.
Advice: It is recommended that your son undergo surgery promptly. If hidden penis is not treated surgically and left to remain hidden, unable to extend externally, the development of the penile body will be restricted. Therefore, hidden penis must be corrected within a certain age range (3-5 years). I hope my answer helps you!

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