Hair-bearing epithelium serving as a nidus for intravesical stone formation in a male who underwent exstrophy repair: A case report

Bladder calculi are rare in children; they are typically associated with congenital abnormalities of the bladder, foreign bodies, intestinal mucosa, or infection. There is a high risk of bladder calculi with bladder exstrophy, a rare congenital condition. Primary bladder closure is usually performed in the first days of life, but subsequent bladder calculi are associated with about 15% of bladder exstrophy repairs. We report a case of hair-bearing epithelium serving as a nidus for intravesical stone formation in a 24-year-old male who underwent exstrophy repair as an infant. Our case emphasizes need for close and continued follow-up in patients who receive bladder exstrophy repair as infants. This is the first report in the literature of hair-bearing epithelium serving as the nidus for bladder stones in this unique patient population.