Alkaline-encrusting pyelitis - A rare disastrous complication postPCNL leading to chronic renal failure.

Alkaline-encrusting pyelitis (AEP) is a severe form of infectious disease characterized by encrustation along the lining of the urinary tract leading to loss of renal function. Common predisposing factors are chronic infection, immunosuppression, and endourology procedures. Urea-producing organisms arefrequently associated, and urine alkalization leads to calcific deposition in the pelvicalyceal system. We present a 23-year male with AEP in a solitary kidney leading to chronic renal failure postpercutaneous nephrolithotomy for renal stones.