case_images: PMC6116173_01
case_images: 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).
case_images: ZJCH_A_1490140_F0001_B.jpg
case_images: PMC6116173_01_ZJCH_A_1490140_F0001_B.jpg
case_images: F0001
case_images: 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)).