PMC3543966_01
Transthoracic echocardiography reveals a round mass (1.8 x 1.7 cm) with a central echolucent area attached to the apical inferior wall of the left ventricle (A). The shape of the mass changed during the cardiac cycle, such as in diastole (B) and systole (C) (arrows).
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F1
Transthoracic echocardiography revealed a 1.8 x 1.7 cm highly mobile round mass attached by a stalk on the apical inferior wall of the left ventricle with an echolucent area (Fig. 1A). The mass was easily compressed (Fig. 1B) and returned to its original shape (Fig. 1C) by the motion of the left ventricle during the cardiac cycle.
Coronal computed tomography image showing a mass with soft tissue density at the apical inferior wall of the left ventricle (arrow).
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F2
CT of the chest showed a 1.9 x 1.6 cm round and pedunculated mass with soft tissue density on the apical inferior wall of the left ventricle (Fig. 2).
Gross specimen. The tumor had the appearance of a sea anemone in water (A), but out of water (B) looked like a solid mass (1.8 x 1.5 cm) covered with gelatinous material.
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F3
The resected tumor was 1.8 x 1.5 cm and had the appearance of a sea anemone (Fig. 3).
Micrographs showing that the narrow, elongated, and branching papillary fronds consisted of a dense connective tissue core surrounded by flat endothelial cells (A, H&E, x 40; B, H&E, x 100).
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F4
Histology showed that the lesion had a papillary configuration with an avascular connective tissue core (Fig. 4).