Background
We wanted to share a patient who had hyperbilirubinemia after appendectomy and Meckel's diverticulectomy applied in a second step hospital's surgical department.

Materials and Methods
21 year old male patient without any health problems earlier, was admitted to emergency department with right lower quadrant abdominal pain. Bilirubin levels were normal preoperatively. Appendectomy and meckel diverticulectomy was performed. He was followed in ICU and his oral intake was closed for the first 24 hours. By the end of 36th hour; he had evidential jaundice and biochemical levels were found that conjugated bilirubin(CB) was 1,33 mg/dl, Total Bilirubin(TB) was 10,95 mg/dl and Unconjugated bilirubin(UB) was 9,62mg/dl.

Results
By the end of 72 hours, TB was 12,56 mg/dl, UB 10,71 mg/dl and DB 1,85 mg/dl and the patient started for oral intake. In hepatobiliary ultrasound it has seen that; liver size was increased, gallbladder wall thickness was increased,intra/extrahepatic biliary tract was normal. Indirect coombs test was negative. The bilirubin levels were decreased gradually. The patient was discharged in the 11th dy postoperatively, with a value of TB 5.1 mg/dl.

Conclusion
Gilbert's syndrome, is a common cause of hereditary non-hemolytic jaundice. In these patients; drugs, anesthetics, surgical stress, infection, prolonged fasting and similar events may trigger high bilirubin levels and it also causes clinical jaundice. In Gilbert’s disease patients; who were not diagnosed before emergency surgery like our patient, prolonged fasting and anesthesia with liver metabolized anesthetics may cause acute bilirubin elevation.