Urinary retention caused by a urethral cystine stone in a 10-month-old infant.

[cystinuria]

Urinary retention resulting from urolithiasis in early infancy is an extremely rare event . Cystine stone formation in those younger than 1 year is also a rare condition . We report a case of urinary retention caused by a urethral cystine stone in a 10 -month -old male infant . Obstructive urolithiasis should be considered one of the reasons of decreased urine output in infants .