urinary stones are prevalent and corynebacterium urealyticum, a urease-positive bacteria, is a frequent urinary tract pathogen. however, the association of this organism with urinary stones is not sufficiently studied in iran. this study was carried out to determine the prevalence of c. urealyticum in patients with urinary stones referred to the urology sections of tehran university of medical ...

Background: Despite modern antibiotic therapy and technological advances in lithotripsy, the presence of infection in patients with urinary stones, as well as with infectious stones is still a significant cause of morbidity and mortality. Recent findings lend more theories as to how infection leads to stone formation. Aim: The bacteriological study of urine and stone samples from patients with ...

the formation of renal and urinary calculi is not due to a single cause but occurs as a multifactor entity, by which some of them still are unknown. three theories of stones formation including nucleation, stone matrix and inhibition of crystallization do not accuse water hardness as a main cause of the formation of urinary calculi 120 patients suffering from renal and urinary calculi and the s...

a study was designed to evaluate the normal value of 24 hr urinary calcium levels in the city of yazd. the average urinary excretion of calcium in a sample of 329 persons randomly selected was 232 mg/day, while patients with a history of recurrent urolithiasis excreted 20x mg/day. there is evidence which shows that more important factors than the amount of urinary calcium exist which influence ...

Endoscopic lithotripsy for upper urinary tract stones is the cornerstone of treatment and a routine procedure for practicing urologists. Although highly effective in reducing or eliminating stone burden, ureteroscopy is associated with a significant risk of infectious complications, namely, fever, pyelonephritis, and rarely sepsis [1]. Although prophylactic administration of antibiotics is reco...

urolithiasis has become a worldwide problem with the prevalence of the disease increasing over the past few decades. while various treatment modalities have evolved over the years, discrepancies exist regarding the clinical indications and the efficacy of each of these treatment options. in the present review, we aim to review the current treatment modalities for urinary tract stones to provide...

melamine is a new risk of urinary stones. gansu province is a heavily affected area and has large population and underdeveloped economy. we hypothesized that number of family members and family income may play significant roles in the formation of urinary stones. a case-control study was performed among 190 infants. results showed that the case group had less numbers of family members than the ...