A cycle of complications: a case report on trastuzumab-induced takotsubo cardiomyopathy causing left ventricular thrombosis complicated by thromboembolic stroke

This case highlights TC and LVT as rare but life-threatening complications of trastuzumab-induced cardiotoxicity. We emphasize the importance of early diagnosis to prevent further complications, such as acute thromboembolic stroke, and the necessity of prompt therapeutic interventions to reduce morbidity and mortality. Additionally, we address the multifactorial aetiology of TC and the need for frequent TTE monitoring in patients undergoing trastuzumab therapy to diagnose these complications early.