Covered exstrophy: a rare variant of classical bladder exstrophy.

Covered exstrophy is an extremely rare variant of exstrophy-epispadias complex. It is less distressing and easier to manage than classical exstrophy of the bladder. We report three cases of this entity, two associated with anorectal malformation and one with unilateral renal agenesis, along with a review of the literature.