Subaortic Membrane Papillary Fibroelastoma

Abstract EN

A 61-year-old male presented for an annual exam and received a transthoracic echocardiogram (TTE) which revealed a mobile mass arising from a subaortic membrane.

Further investigations with a transesophageal echocardiogram (TEE) and cardiac computerized tomography angiography (CTA) confirmed the presence of a mobile 9 mm×3 mm mass on a subaortic membrane.

Cardiothoracic surgery was performed with an open operation removing the mass and subaortic membrane.

Upon visual inspection, the mass was likened to a sea anemone and immunohistochemical staining performed pathologically confirmed the diagnosis of cardiac papillary fibroelastoma.

This case represents the first reported example of a cardiac papillary fibroelastoma (PFE) arising from a subaortic membrane.

Although PFEs are benign cardiac tumors, proper identification and consideration for excision of these lesions may be indicated to prevent thromboembolic complications.