A 6 year old girl presents with lower abdominal pain for 6 hours, which was sudden in onset. She is also mildly febrile. There was no history of nausea or vomiting. No urinary or bowel symptoms were present. Her medical, surgical and drug histories are uneventful.
WBC: 14,350/mm3 (4,000-11,000) 80% Neutrophils; left-shift noted. Hb: 13.4 g/dl (11.5-18.5) Plt : 285,000/mm3 (150,000-350,000) C-Reactive Protein: 1.7 mg/dL (< 6)
The abdominal cavity is difficult to visualize due to the child's obesity. However, a hyperechoic mass is seen just beneath the abdominal wall in the right iliac fossa. The appendix cannot be visualized clearly.
There is a triangular, heterogenous fatty mass located between the anterior abdominal wall and the ascending colon, with surrounding inflammatory changes. The appendix appears normal.
The urinalysis is unremarkable.