Figure 40.1 (A) Barium study of patient with recurrent vomiting and abdominal pain and three episodes of intussusception showing multiple filling defects and an unusual radiological picture. (B) Laparotomy revealed gangrenous ileo-ileal intussusceptions. (C) The lumen was occluded by swallowed hair, string and wool.

Presentation is variable and may be non-specific (Table 40.1). If an ingested metallic object cannot be confirmed as lead free, lead levels must be checked.