PMC6116173_01
Panel A, C, and E with right anterior oblique projection showing mid left anterior descending (LAD) artery chronic total occlusion (CTO) stump, unable to cross XYZ wire into true lumen of LAD artery distal to CTO stump, and spontaneous recanalization after 3 years, respectively. Panel B, D, and F with anterio-posterior cranial view showing attempted antegrade crossing of CTO with XYZ wire, unchanged LAD artery stump CTO after attempted antegrade wire crossing and spontaneously recanalized LAD artery 3 years after attempted wire crossing, respectively. (LCx: Left Circumflex).
ZJCH_A_1490140_F0001_B.jpg
PMC6116173_01_ZJCH_A_1490140_F0001_B.jpg
F0001
Following attempted intervention, there was still a 100% residual stenosis, and the procedure was aborted (Figure 1(A-D)). Echocardiography demonstrated severe pulmonary hypertension and eventually the patient underwent repeat coronary angiography that revealed spontaneous recananlization of the prior CTO of the mid-LAD artery with a 60% stenosis at the site of prior CTO (Figure 1(E,F)).