Objective:
After prostat disease and urinary system infections, urinary tract stones are one of the most common disorders of the urinary tract. Many factors play role at the formation of stones such as age, gender, climate, diet and infections. The aim of the study was to examine the distribution of the urinary tract stones retrospectively, according to age, gender and seasons, which were studied in our laboratory in the past 2 years.
Material and Methods:
Demographics of patients, stone type and the date of application to the laboratory, between March 2011 and March 2013 were analyzed. Stone analysis was made by chemical method.
Results:
Fifty-five female (% 30,6), 125 male (% 69,4), at the total 180 patients’ stones were included to the study. Age distribution of patients were between 1-89 and 11 (% 6,1) of the patients were 18 and under. Male/female ratio was 2,27/1. Ninety-one of the patients (% 50,6) applied on winter and autumn, 89 of them (% 49,4) applied on summer and spring. No significant difference between seasons was found. When stone types examined 161 oxalate, 157 calcium, 65 urate, 33 ammonium, 28 magnesium, 10 carbonate, 2 cystine and 1 phosphate was found to be positive. Oxalate in men (p=0,003) and in women ammonium (p=0,008) was significantly higher. The incidence of calcium and oxalate over the age of 19 (p=0,012; p=0,03, respectively), the incidence of magnesium at the age of 18 and under (p=0,006) was found significantly higher. Urate stones were also positive at % 35,8 of those with a positive calcium-oxalate.
Conclusion:
The reason of a more frequent oxalate in men thought to be of eating habits and in women more frequent ammonium thought to be cause of the common urinary tract infections. Calcium-oxalate stone to be accompanied by urate stones suggests that excretion of uric acid in urine may be a predisposing factor for calcium-oxalate formation.
Keywords: age, gender, urinary system stones