Fig. 3. Echocardiography findings. (A) The LMCA (4.3 mm [Z-score^a 1.64]) and the LAD (3.8 mm [Z-score 2.23]) were not tapered. (B) The RCA (4.1 mm [Z-score 2.62]) was dilated and aneurysmal change was suspected on hospital day 6. (C) On hospital day 13, the size of the LMCA (3.9 mm [Z-score 1.04]) and LAD (2.9 mm [Z-score 0.38]) had decreased. (D) The RCA size had decreased dramatically (3.1 mm [Z-score 0.70]) on the last day of patient's hospitalization.

LMCA = left main coronary artery, LAD = left anterior descending coronary artery, RCA = right coronary artery, CAL = coronary artery length.

^aThe definition of CAL has been modified, with CAL defined by a Z-score ≥ 2.5, corrected for body surface.