Fig. 1From: Clinical features and outcomes of bowel perforation in primary pediatric gastrointestinal lymphomaPerforation confirmed by radiology imaging (white arrow: free gas). a a little free gas with decreasing under the diaphragm by abdominal X-ray. b a lot of free gas without decreasing under the diaphragm by abdominal X-ray. c localized intra-abdominal free gas around the colon by abdominal CT. d diffuse intra-abdominal free gas in front of the liver by abdominal CTBack to article page