A clinical observation was made on 274 cases of urolithiasis among the number of 1,122 inpatients during 3 years and 6 months from January 1978 to June 1981.
The results are summerized as follows:
1. The incidence of the patients with urolithiasis was 22% of the inpatients.
2. The age of the patients ranged from 2 to 82 years old, with the highest incidence in 20-49 in age (69.6%).
3. The cases consisted of 75 cases with renal stone (27%), 161 cases with ureteral stone (59%), 26 cases with vesical stone (9.5%), and 12 cases with urethral stone (4.5%).
4. The ratio of the right to the left of the upper urinary tract stones was 120:116.
5. The most favored predilection of the ureteral stones was lower 1/3 of the ureter in 62.8% of the ureteral stones.
6. The size and weight of the largest number of the urinary stones were below 1.0cm in length (59.7%) and below 0.5gm (38.7%).
7. The clinical symptoms of upper urinary tract stones were flank pain in 90%, gross hematuria in 19%, nausea and vomiting in 9% and frequency in 7%, Those of lower urinary tract stones were painful urination in 79%, sudden stoppage in 49%, frequency in 44% and gross hematuria in 42%.
8. The combined diseases were urethral stricture in 8 cases, B.P.H. in 7 cases, tuberculosis of genitourinary tract in 6 cases, neurogenic bladder in 5 cases, and lower ureteral stricture in 5 cases.
9. Treatment consisted of surgical intervention in 64.5%, instrumental manipulation in 19%, conservative treatment in 13.2% and untreated cases in 3.3%.
10. The largest number of the urinary stones on chemical components was of mixed composition of calcium phosphate and calcium oxalate.
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