Systemic Artery Aneurysm in Two Children with Kawasaki Disease: A Frequently Overlooked Lesion

Kawasaki disease (KD) is a multisystem vasculitis affecting medium-sized arteries. While coronary involvement is a well-documented complication, extensive disease is often associated with systemic arterial involvement. Multiple studies have reported the occurrence of systemic and pulmonary arterial involvement. This atypical presentation underscores the importance of a thorough diagnostic evaluation, including early echocardiography, radiological imaging, and CT angiography, when KD is suspected. Early identification of atypical presentations can significantly improve the disease prognosis by reducing the risks of vascular stenosis, obstruction, and thrombosis. This case series highlights the underexplored atypical presentations of KD, emphasising the necessity for timely recognition, investigation, and management of systemic and pulmonary arterial involvement alongside coronary complications.