On the question of foreign bodies in the bladder

Foreign bodies in the bladder are found in both men and women, more often in the latter. They penetrate in two ways: 1st through the urethra, 1st through the bladder wall (gunshot wound to the bladder, surgical interventions on the bladder and on adjacent organs, followed by the penetration of a foreign body into the bladder). Leaving aside the question of the penetration of a foreign body through the wall of the bladder, I will focus on the possibility of penetration of foreign bodies through the urethra.