Classification of staghorn lithiasis (1) partial staghorn lithiasis, showing a stone occupying the renal pelvis and two renal calyces, and (2) complete staghorn lithiasis, showing a stone occupying the renal pelvis and calyceal system.

Classification of staghorn lithiasis (1) partial staghorn lithiasis, showing a stone occupying the renal pelvis and two renal calyces, and (2) complete staghorn lithiasis, showing a stone occupying the renal pelvis and calyceal system.

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Staghorn lithiasis is described as the presence of stones in the urinary tract that create a mold of the renal collecting system, with the characteristic of being branched. It has a strong association with urinary tract infections caused by urea-splitting organisms. The composition of the stone usually consists of pure magnesium ammonium phosphate...

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... lithiasis is divided into complete and partial. In the complete one, the stones occupy the renal pelvis and the calyceal system, or more than 80% of the collecting system; unlike the partial ones that occupy the renal pelvis and at least two calyces (Figure 1). 10 ...