Arrhythmia as a Possible Complication of Mycophenolate Mofetil in Systemic Sclerosis: A Case Report.

A 55-year-old male patient with diffuse cutaneous systemic sclerosis (dcSSC) since 2018 presented with a history of arrhythmia. He had been stable for 5 years with pantoprazole, diltiazem, and mycophenolate mofetil (MMF); vitamin E; and vitamin D until he developed arrhythmia. Different evaluations revealed left bundle branch block, wall motion abnormality, mildly reduced systolic function, diffused interstitial fibrosis, and lesions in the left circumflex artery (LCX) and left anterior descending artery (LAD) and stenosis in LCX, without significant improvement following percutaneous coronary intervention for LCX stenosis.