system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
A 6-year-old boy is brought to the emergency department for acute intermittent umbilical abdominal pain and several episodes of nonbilious vomiting for 4 hours. The pain radiates to his right lower abdomen and occurs every 15–30 minutes. During these episodes of pain, the boy draws up his knees to the chest. He had two similar episodes within the past 6 months. Abdominal examination shows periumbilical tenderness with no masses palpated. Transverse abdominal ultrasound shows concentric rings of bowel. His hemoglobin concentration is 10.2 g/dL. Which of the following is the most common underlying cause of this patient's condition?
assistant
Meckel diverticulum