PMC9133422_01
Aneurysm formation over middle right coronary artery (RCA) with a diameter of 2.9 mm near the ostia, gradual dilation to maximum diameter of 6.08 mm near the middle 1/3 of RCA with length of 3.5 cm and distal RCA diameter of 3.11 mm (posterior AV groove) (A). (B-D) showed Left coronary artery (LCA), Left anterior descending artery (LAD) and Left circumflex coronary artery (LCX). (B) Left coronary artery (LCA): 2.24 mm (Z-score: -0.57) in diameter. (C) Left anterior descending artery (LAD): 2.17 mm (Z-score: +0.46) in diameter. (D) Left circumflex coronary artery (LCX): 1.7 mm in diameter.
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F1
After being discharged, the RCA still progressed to a mid-sized aneurysm 6.08 mm (Z score: 4.85) in diameter and 35 mm in length (day 20 of illness) (Figure 1).
Normal inner diameter and origin of coronary arteries; regressed right coronary artery with a diameter of 2.91 mm (A) and normal left coronary artery (LCA) (B). (B) Left coronary artery (LCA): 2.82 mm (Z score = +0.4) in diameter.
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F2
The mid-sized aneurysm regressed to within normal range with 2.91 mm in diameter (Z score = 1.46) on day 138 of illness (Figure 2).