Newly developed lesions in right coronary artery during PCI

In the differential diagnosis, when newly appeared lesions that involves proximal segment of RCA were seen, firstly coronary dissection should be taken into consideration. Coronary dissection that generally occurs as a complication of catheter manipulation is characterized by filling the defects on contrast injection, detection of dissection flap or false and true lumens. These characteristics of dissection cannot be seen in angiographic images of this patient.