In a period of 16 years, 22 boys whose ages ranged from 10 months to 1
5 years were treated for stones occurring predominantly in the lower u
rinary tract. These boys represented 9.6/100 000 paediatric admissions
, indicating the rarity of urinary stones in children in Zaria. Congen
ital obstructing lesions were present in 13 (59%) and the urine was in
fected in eight cases, most frequently by Klebsiella spp.