[CEP/LTS-X: a simple clinical classification of urinary calculi].

The introduction of new treatment techniques for urinary stones requires a classification of our concepts concerning the application of these various modalities. In order to individualize the treatment of stones as precisely as possible, the authors propose a clinical and therapeutic classification based on the characteristics of the stone, the state of the urinary tract, the state of the parenchyma and renal function, the site of the stone, its dimensions and consistency and the number of stones. On the basis of these criteria, renal stones can be classified into 4 types, ureteric stones can be classified into 3 types and bladder and urethral stones can be classified into 2 types. The stones observed in each category are described together with the most appropriate treatment.