The size of the paracardial adipocytes was significantly larger in type 2 diabetic patients (13.7 (11.1–18.0) versus 10.2 (6.6–13.1) x 102 μm2, p = 0.038) and in CAD patients (13.6 (10.7–18.0) versus (6.7 (5.9–9.9) x 102 μm2, p = 0.0004) but was not correlated to BMI (p = 0.642, r = 0.0839), not related to the PF level of A-FABP (p = 0.735, r = 0.0611) and inversely related to the PF level of APN (p = 0.0364, r = -0.366). Here, FABP4 is linked to coronary artery disorder.