Immunoglobulin G4-Related Coronary Periarteritis With Multiple Intracoronary Images

A 58-year-old man who had been diagnosed with bilateral hilar lymphadenopathy and high serum immunoglobulin G4 (IgG4) level was treated as having possible IgG4-related disease (IgG4-RD). Computed tomography revealed abdominal aortic aneurysm. He was given 40 mg/day of oral prednisolone (PSL) for 2