Intramural haematoma is a rare cause of duodenal obstruction. Its most common cause is abdominal trauma. Diagnostic difficulty arises if the patient or the child's parents fail to mention the episode of trauma, regarding it as an unrelated or insignificant event, as in the presented case. Computed tomography is the imaging modality of choice. Intramural duodenal haematoma is best treated conservatively, since operative treatment is associated with a high complication rate and longer hospitalization.