Left ventricular cardiac cyst: Unusual echocardiographic appearance of a cardiac hemangioma

摘要

A 23-year-old man presented with recent intermittent shortness of breath. He was healthy, with no significant medical history. Transthoracic echocardiographic examination revealed a left ventricular cyst attached to the interventricular septum (Figure, A); the rest of the echocardiographic examination was unremarkable. Cardiac magnetic resonance imaging was requested for tissue characterization. The lesion demonstrated high signal intensity on both Tl- and T2-weighted fast spin echocardi-ography (Figure, B and C). In addition, the lesion demonstrated a homogeneous rapid enhancement pattern during first-pass infusion of gadolinium-containing contrast, indicating high vascularity (Movie I in the online-only Data Supplement and Figure, D and E). On delayed myocardial enhancement imaging, the mass showed marked enhancement because of its high vascularity (Figure, F). The tumor was surgically excised, and the patient had an uneventful recovery. Pathology examination revealed a lesion composed of thin-walled ectatic vessels with diffused capillary proliferation consistent with capillary hem-angioma (Figure, G).