A 4-year-old male child was admitted with a large 12 × 15 cm suprarenal abdominal aortic pseudoaneurysm 7 months after an episode of blunt abdominal trauma. Aneurysmorrhaphy was performed through a left thoracoabdominal approach with Dacron patch aortoplasty. This report summarizes this case and reviews the literature on abdominal aortic pseudoaneurysms after blunt abdominal trauma. © 1993.