After that, marked thrombocytosis appeared in the CBC (platelet count: 1.168.000/μL), ESR and CRP normalized but coronary artery dilatation progressed to a giant aneurysm in day 17 as follows: right coronary artery (RCA): 8.3 mm, left main coronary artery (LMCA) and LAD: 6.7–7.2 mm with good left ventricular ejection fraction. Here, CRP is linked to thrombocytosis disease.