Corona of glans penis
The corona of glans penis or penis crown is the rounded edge or flare that forms at the base of the glans (which is the end of the penis) in human males. The glans, and therefore the corona, are exposed (seen) when the foreskin (or prepuce) of the penis is pulled back (retracted.) The appearance of the glans penis is often slightly different between an uncircumcised and a circumcised male. A circumcised male has had the foreskin shortened or removed. This is a very common procedure (medical operation) done in many cultures or countries. It is often done shortly after birth. If the foreskin is completely removed, the corona will always be exposed. If the foreskin is just shortened, the corona may still be covered by the foreskin when it is in the forward (unretracted) position.