A 25-year-old Japanese woman had both ulcerative colitis and Takavasu'
s disease and was positive for HLA-A24, BW52, and DR2. She was found t
o have thickening of the wall of the carotid artery on contrast-enhanc
ed computerized tomography of the neck and chest. Prednisolone, berapr
ost, and sulfapyridine achieved rapid remission of both diseases.