American Urological Association - Micropenis and Concealed Penis

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Micropenis and Concealed Penis

Image A

Image B

Micropenis

  • Normally-formed penis with a size that is 2 or > standard deviations less than the mean.
  • Ratio of length to circumference is normal.
  • Corpora cavernosa may be fused, and scrotum is generally fused (and diminutive).
  • Testes are small and often cryptorchid.
  • 3 most common causes are: Kallman's syndrome, primary testicular failure, and idiopathic.

Concealed penis

  • Normally developed penis that becomes buried in a suprapubic fat pad.
  • May be congenital or idiopathic (following circumcision) or, as shown, "acquired"! (image A) & (image B).

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