The Role of 18 F-FDG PET/CT Combined With MPI in Cogan's Syndrome With Multiple Arteritis and Coronary Involvement: A Case Report.

We present a case of a 49-year-old woman who complained of chest pain after activity for 3 months. She had undergone percutaneous coronary intervention (PCI) on the left main (LM) and right coronary artery (RCA) for acute myocardial infarction (AMI) 1 year ago. At this admission, a coronary angiogram (CAG) revealed stent restenosis. Then, 99m Tc-Sestamibi myocardial perfusion imaging (MPI) and 18 F-FDG PET/CT showed multiple arteritis involving the coronary artery with no obvious myocardial ischemia. This suggests that the patient should be treated with anti-inflammatory measures instead of repeating revascularization caused by persistent stent stenosis, making this an extremely rare case of Cogan's syndrome (CS).