Abstract
A 43-year-old man with ulcerative colitis(UC)has been treated with salazosulfapyridine(39/day)for the past 13 years since the initial diagnosis. He had been in a favorable course, However, a follow-up barium enema stu.dy in July, 1998 revealed pneumatosis cy$toides intestinalis(PCI)along the ascendillg colon and hepatic flexure. Only g cases of PCI associated withUC were reported in the last 12 years in Japan. Eight of these g reported cases(89.9%)had PCIlesions along the ascending colon or hepatic flexure. We thought that the right-sided colon isapredilected area in PCI associated with UC. More case studies are required to clarify thisClinical irnplication.
