A 71-year-old woman presented with chest pain on exertion. A coronary angiogram revealed a bifurcation lesion in the right coronary artery (figure 1A). A 2.75×20 mm drug-eluting stent was deployed (figure 1B), and intravascular ultrasound showed that the stent was fully dilated (figure 1C). However, a subsequent right coronary angiogram demonstrated severe coronary dissection from the ostium spreading to the stented segment (figure 1D), and a linear image of contrast can be seen outside the lumen underneath the proximal segment of the stent. Intravascular ultrasound demonstrated the presence of an intramural haematoma that had been …