During circumcision, the prepuce (foreskin) is surgically removed while the glans penis is preserved. The procedure aims to excise the redundant foreskin to expose the glans permanently. Care is taken to avoid injury to the glans, which is a highly sensitive structure essential for sexual function. Preservation of the glans is critical to maintain normal anatomy and sensation. Structures like the frenulum may be partially removed or altered depending on the surgical technique, but the glans remains intact throughout.

Reference: Campbell-Walsh Urology, 12th Edition.