Recurrent urinary tract infection due to large urinary bladder calculus in a 6-year-old child

Urinary bladder calculus is an uncommon presentation in the tropics, especially in children. Large (>2.5 cm) or giant bladder stones are rare and are more common in males due to higher incidence of lower urinary tract obstruction. Ultrasonography and plain radiography play an important role in the diagnosis of urinary bladder stone as well as evaluation for complications that may be associated with this condition. A 6-year-old boy presented with a 3-month history of abdominal pain and dysuria. He was treated with antibiotics on several occasions in a rural health center with no satisfactory improvement of his symptoms. Ultrasound and intravenous urography showed a huge oval urinary bladder calculus measuring 4.5 cm × 4.2 cm × 4.0 cm with moderate bilateral hydronephrosis. We presented a rare case of large bladder calculus in a 6-year-old boy with recurrent urinary tract infection highlighting the role of ultrasonography and excretory urography in the management.