Unexpected Finding of an Inflammatory Myofibroblastic Tumor of the Heart Causing Pulmonary Artery Obstruction in an Asymptomatic Toddler

Inflammatory myofibroblastic tumor (IMT) of the heart is a very rare tumor, constituting less than 5% of primary heart tumors. This case report describes the unexpected finding of IMT of the heart causing pulmonary artery obstruction in an asymptomatic toddler.