[Giant renal lithiasis]. / Litiasis renal gigante.

OBJECTIVE: To describe a case of giant renal calculus. METHODS/RESULTS: A 57-year-old female with a previous history of left renal calculus 30 years earlier, consulted for episodes of gross hematuria. The imaging studies showed a giant, spherical calculus, 9 cm in diameter, in the left renal pelvis with hydronephrosis and remaining renal parenchyma functioning. The patient refused surgery. CONCLUSION: Giant renal calculi may progress slowly, without symptoms and without abolishing renal function.