Intestinal malrotation presents with different clinical characteristics, depending upon the age of the patient. The medical records of 44 patients treated for intestinal malrotation with/without midgut volvuls between January 2002 and August 2009 at Seoul National University Children's Hospital were reviewed retrospectively. Patients were grouped by the age criteria of 1 and 12 months. Fourteen patients were under 1 month of age (31.8%), 9 patients between 1 month and 12 months (20.5%) and 21 patients over 12 months (47.7%). Twenty patients (45.5%) presented with volvulus. Vomiting (66%) and abdominal pain (20%) were the most common symptoms. UGIS (68.2%) was the most frequent diagnostic tool. Mean postoperative hospital stay was 13.7 days. There were 7 mild postoperative complications. Volvulus was more frequent in patients under 1 month (p=0.025) than over 1 month. The interval between diagnosis and operation was shorter in patients under 1 month (p=0.003) than in patients over one month of age. In the age between under and over 12 months, volvulus was more common in those under 12 months of age, but the difference was not significant. The interval from diagnosis to operation was shorter in patients under 12 months than over 12 months of age (p=0.001). Vomiting was the most frequent symptom in patients under 12 months. On the other hand, abdominal pain was the most frequent symptom in patients over 12 months.