Chylous mesenteric cyst is a rare variant of mesenteric cystic lesions. Pathologically there is lack of communication of the main lymphatic vessels, resulting in cystic mass formation. Clinical presentation is diverse and can range from an incidentally apparent abdominal mass to symptoms of an acute abdomen. A 5-year-old girl presented with abdominal distension without pain. CT scan showed a huge and thin-walled cystic mass without solid portion. Laparotomy showed a 20 x 18 cm sized huge mesenteric cyst containing chylous fluid. Pathological diagnosis was cystic lymphangioma.

Accessory cervical thymic tissue has been rarely reported. However, it should be included in the differential diagnosis of neck masses in children, along with branchial anomalies, lymph nodes and other tumors. This lesion occurs along the descending line of the thymus between the angle of mandible and superior mediastinum. A 2-month-old infant presented with an asymptomatic left sided neck mass. MRI revealed a well defined homogeneous mass in the deep lobe of left parotid gland. At operation, an easily identified soft tissue mass was found in the left submandibular area, measuring 3 × 1.5 cm. It was completely excised. Microscopic examination revealed normal thymic tissue.

Trauma is one of the leading causes of death in children. Abdominal trauma is about 10% of all pediatric trauma. This study describes the sex and age distribution, injury mechanism, site of intraabdominal injury, management and mortality of children aged 16 years or less who suffered abdominal trauma. The hospital records of 63 patients treated for abdominal injury between March 1997 and February 2007 at the department of surgery, Inje University Pusan Paik Hospital, were analyzed retrospectively. The peak age of incidence was between 2 and 10 years (78%) and this report showed male predominance(2.7:1). The most common mechanism of blunt abdominal trauma was pedestrian traffic accident (49%). The most common injured organ was liver. More than Grade IV injury of liver and spleen comprised of 4(12%) and 5(24%), respectively. Fourteen cases (22%) had multiple organ injuries. Forty nine cases (78%) were managed nonoperatively. Three patients (4.8%) died, who had Grade IV liver injury, Grade IV spleen injury, and liver and spleen injury with combined inferior vena cava injury, respectively. All of the three mortality cases had operative management. In conclusion, the liver or spleen injury which was more than Grade 4 might lead to mortality in spite of operation, although many cases could be improved by nonoperative management.