Video capsule endoscopy identifies severe small bowel lesions in a pediatric case of Henoch-Schönlein Purpura

A 12-year-old boy experienced recurrent abdominal pain for over 20 days after eating a cold hamburger. The pain, predominantly periumbilical, was accompanied by melena. Physical examination revealed periumbilical tenderness without any rash. Laboratory tests revealed an increase in WBC (23×10⁹/L), CRP (12.6 mg/L), ESR (18 mm/h), and D-dimer (2743 µg/L). Abdominal ultrasound revealed small bowel wall thickening, while the abdominal computed tomography scan showed no abnormalities. No significant lesions were found in gastroscopy and colonoscopy.