Urolithiasis is the most important disease and one of the most common diseases
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in the fields of Urology, and recently the incidence of urolithiasis has increasing tendency with the improvement of living condition in Korea. 1
Though the cause of urolithiasis has not clearly yet, it -has been believed that diet with food containing rich calcium, phosphate, oxalate and uric acid compon-
ents plays a great role in the stone formation.
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Previously the author had clarified the relationship between urolithiasis and
diversified and westernized food life with milk and dairy products in Koresn "people.
Accurate `analysis of urinary calculi is fundamental fore study of the etiology of stone formation and essential for treatment and prevention of urolithiasis.
In this article, by the biochemical method the author had analyzed 100 urinary calculi randomly selected among calculi which were obtained from the patients with urolithiasis during the past 8 years and 7 months from April, 1976 to October, 1984, and made a study of 593 patients with urolithiasis who were admitted to our department of Urology in the same period with retrospective statistical analysis by computer.
The following results were obtained.
1) The result of biochemical analysis of 100 urinary calculi revealed multiple composition in all cases and the most part of calculi( 73%) were composed with calcium, magnesium,, phosphates oxalate, xantine, and uric acid. Calcium component containing calculi were 97-% and only organic component containing calculi were 1 % .
2) The incidence of the patients with urolithiasis ( 593 cases) was 28.2 % of
total in-patients( 2,104 cases) in the past 8 years and 7 months.
3) The great majority on the age distribution was in 20-40 years( 80.4%) and
the sex ratio of male to female was about 1.43 : 1.
4) A seasonal occurence was the highest in summer( 82A%) and the lowest
in winter ( 20A %) .
5) On locational distribution of calculi, ureter( 80.9 %), kidney( 11.4 %), bladder
( 6.6 %) and urethra ( 1.1 %) was in the order.
The most common location of ureteral calculi was lower one third of ureter
(64.1%).
1) On urinalysis of all patients with urolithiasis at admission, hematuria was
present in 75 % and pyuria in 38.8 %.
8) The most frequent clinical symptom was flank pain( 91.6 %).
9 ) Ureterolithotomy was performed on 192 cases( 30.1 %) of 312 cases ( 48.9 %)
treated with surgical intervention among total patients with urolithiasis.
10) The success rate with cystoscopic removal of calculi using Dormia stone
dislodger " was 65.4%.
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