Figure 2a. Bicycle handlebar injury in a 7-year-old boy. (a) Photograph shows focal ecchymosis in the left upper quadrant due to the impact of the end of a handlebar. (b) CT scan shows focal bowel wall thickening in the same region (arrows). A small amount of free fluid was present in the left upper quadrant and pelvis. A jejunal perforation was found at surgery. (Case not included in the Clinical Experience section or in the Table. Courtesy of Kathleen Emery, MD, Children's Hospital Medical Center, Cincinnati, Ohio.)