Evolution in the Understanding of the Etiology of Staghorn Renal Lithiasis

Staghorn lithiasis, characterized by renal calculi that extensively occupy the renal collecting system, poses significant medical challenges due to high morbidity and mortality rates. Traditionally attributed primarily to recurrent urinary tract infections caused by urease-producing bacteria, recent studies indicate a shift toward an increased prevalence of metabolic stones. This change may be linked to rising obesity and metabolic syndrome rates. Historical perspectives emphasized struvite stones, associated with infections, but emerging data reveal a notable proportion of calcium phosphate and mixed stones, suggesting a complex interplay between metabolic factors and infection. Analysis of stone composition in patients has shown that metabolic abnormalities are common, emphasizing the need for comprehensive evaluations beyond infectious risk. Understanding this evolving etiology is crucial for guiding treatment and improving patient outcomes.