The chole lithiasis of the biliary system is one of the most common diseases which are hospitalized and treated surgically in the field of general surgery. A retrospective study of 175 patients who admitted and treated surgically with chole lithiasis at the department of general surgery of Chungnam National University Hospital from March 1987 to September 1989 was performed.
The results are as follow：
1. The peak incidence of chole lithiasis was 6th decade, 32.0％ and followed by 7th decade, 20.0％ and 5th decade, 17.7％, and the ratio of females and males is approximately 5：4.
2. The stones are most farequently found in the gall bladder 62.3％, and followed by in the common bile duct 56.6％, and in the intrahepatic duct 24.4％.
3. The most common symptoms and signs are pain, 96.6％, tenderness, 67.4％, and fever and chill 66.9％, and over 60％ of patients were suffered from less than 3 months.
4. The results of culture shows the E.coli was found in 37.0％ and klebsiella 12.3％ of patients.
5. The laboratory finding reveals that moderated elevation of SGOT, SGPT, and alkaline phosphatase in about 40％, and 50％ of patients.
6. The major operative procedures are cholecystectomy, choledochotomy and T-tube drainage in 49.1％ of patients and cholecystectomy only in 32.9％ of patients.
7. The major associated diseases are cholecystitis in 37.1％, cholangitis in 15.0％ and gall bladder empyema in 12.0％.
8. The most common complication is wound infection in 12.0％ of patients and followed by residual stone in 9.0％ of patients.
9. The overall mortality rate is 1.2％ and the causes of death are one case of sepsis and one case of bile peritonitis.
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