A case of gastric pneumatosis is described in a 6 month old girl with Down
syndrome. Plain abdominal radiographs showed a radiolucent rim within the g
astric wall and a dilated stomach. Ultrasonography showed diffuse echoic st
reaks of air in the gastric wall, pneumobilia and gastroduodenal dilatation
. Upper GI series showed duodenal stenosis. Gastric pneumatosis (air within
the gastric wall), is an unusual radiographic finding. It may be of mechan
ical or inflammatory origin or, in some rare cases, remain unexplained.