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.
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).