Fig. 2
From: Spontaneous coronary artery dissection in a young patient with antiphospholipid syndrome
It requires OCT (optical coherence tomography) or IVUS (intravascular ultrasound examination) to be able to make the correct diagnosis. SCAD (spontaneous coronary artery dissection) type 1 is due to an intimal tear that separates the true lumen from the false lumen. SCAD types 2 and 3 are characterized by the absence of an intimal tear and appear as a long segment of diffusely narrowed artery due to an intramural hematoma causing stenosis of varying severity. SCAD type 4 results from complete occlusion of the vessel