A 17-yr-old female admitted with repeated periumbilical pain, nausea, vomiting and febrile sensation. Fourteen years ago, she was operated for intestinal tuberculosis. Physical examination revealed mild periumbilical tenderness without rebound tenderness. In laboratory data, white blood cell count was 12,800/microL and the other findings were normal. Simple abdominal radiography and abdominal computerized tomography revealed no abnormality except mild paralytic ileus. The following day a colonoscopy was performed, which revealed a polypoid lesion in the cecum (Fig. 1). An exploratory laparotomy was performed and it was seen dimple at cecum, the appendix invaginated into the cecum and an appendectomy was performed. However, we could not find any other pathologic lesions at the ileocecal region. The appendix was 2.5 cm in length, and it showed a chronic inflammation pathologically (Fig. 2).