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COMPLICATION OF CATHETERIZATION OF THE EXTERNAL CAROTID ARTERY

"linear" (subserosal) rather than the bubbly (submucosal) variety. It has been seen with imperforate anus and other conditions." It is important not to confuse the "bubbly" appearance of normal meconium with the similar appearance produced by intramural gas. In cases of Hirschsprung's disease, pneumatosis indicates coexistent enterocolitis. The second group involves cases of vascular compromise, again without NEe. Mesenteric thrombosis secondary to catheters has been described in association with pneumatosis and no NEe. Pneumatosis has also been seen in cases of intussusception and also in midgut volvulus. This important, although admittedly uncommon condition can closely mimic NEC both clinically and radiologically. Initially, the plain films suggest a duodenal obstruction but as the obstruction is often intermittent, gas can be present throughout the bowel, hence mimicking the ileus seen in early NEe. When vascular compromise complicates volvulus, pneumatosis may be present in affected 100ps.3