RÉSUMÉ
PURPOSE: Acute appendicitis is one of the most common causes of abdominal emergency. Children, under age of 5 years, are unable to give an accurate history, but other nonspecific abdominal pain is more common at this age. Because diagnosis is often delayed and progression of appendicitis is faster, incidence and perforation rate is higher than those of adults. Abdominal US and CT are helpful in diagnosis of acute appendicitis. METHODS: Between July, 1997 and April, 2004, 39 patients below 5-year-old were participated, but 2 (Negative) patients were excluded. This study was done retrospectively based on medical charts. For statistical analysis, Chi-squre test was used. RESULTS: All patients undergone emergency operations, in which male to female ratio was 1.79: 1, with its mean age of 4.05. 19 patients (49%) were perforated and fever developed more frequently in perforating group, but leukocytosis was not significant. Delayed preoperative duration was associated with perforation rate significantly. All complications were occurred in perforating group. CONCLUSION: To decrease perforation rate and complications, early diagnosis and management are necessary to avoid delaying preoperative time.