Intramuscular hemangioma in the right ventricle

Abstract

Intramuscular cardiac hemangiomas are extremely rare. We describe a 74-year-old man with a tumor occupying the apex of the right ventricle that was incidentally diagnosed by echocardiography. Computed tomography and coronary angiography showed that the tumor arose from the ventricular septum and that the feeding artery was a branch of the right coronary artery. The tumor was completely excised, and the postoperative course was uneventful. Histological examination revealed that the tumor was a cardiac hemangioma (intramuscular type). To our knowledge, this is only the second case report of an intramuscular cardiac hemangioma in the world literature.

Intermuscular Hemangioma of the Left Ventricle

“…The incidence of cardiac hemangioma is very low, accounting for 5% to 10% of all benign cardiac tumors 2 . Histologically, cardiac hemangioma can be classified as cavernous hemangioma, capillary hemangioma, intermuscular hemangioma and hemangioendothelioma, of which cavernous hemangioma is the most common 1 . Intermuscular hemangioma occurs more frequently in skeletal muscles of the extremities.…”

“…Intermuscular hemangioma in the heart is very rare and, to our knowledge, only three cases have been reported in the world literature. In 2008, Sotoda et al 1 reported a case of intermuscular hemangioma in the right ventricle, which was resected completely. In 1991, Oda et al 3 reported a case of intermuscular hemangioma, which also occurred in the right ventricle.…”

“…Cardiac intermuscular hemangioma is histologically characterized by hyperplasia of large amounts of structurally abnormal vascular tissues between the myocardial fibers with different luminal sizes and the presence of vascular endothelial cells with/without surrounding smooth muscle cells 1 . An overview of the four cases of cardiac intermuscular hemangioma shows that intermuscular hemangioma is more likely to occur in cardiac ventricles rich in cardiac muscles.…”

“…Cardiac hemangiomas are extremely rare. Intermuscular hemangioma is a histological type of hemangioma that rarely originates from the heart 1 . Here, we present a case report of intramuscular hemangioma in the left ventricle.…”

Two Cases of Cardiac Arteriovenous Malformation Complicated by a Local Angioproliferative Process

“…In the literature, most cardiac vascular anomalies are termed “(hem)angiomas” and are classified according to the main type of vessel involved or their topographic localization within the heart (endocardial, intramuscular, or epicardial) [9, 10]. However, the general approach to classify all benign vascular cardiac tumours as (hem)angioma needs further specification.…”