Anatomy before and after penile inversion

During penile inversion, the surgeon makes a cut in the area between the rectum and the urethra and prostate. This forms a tunnel that becomes the new vagina. The surgeon lines the inside of the tunnel with skin from the scrotum, the penis or both. If there's not enough penile or scrotal skin, the surgeon might take skin from another area of the body and use it for the new vagina as well.

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