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(Circulation. 1998;98:1036-1037.)
© 1998 American Heart Association, Inc.

Images in Cardiovascular Medicine

Unusual Left Ventricular Mass

C. Basso, MD; G. Fasoli, MD; D. Casarotto, MD; ; G. Thiene, MD

From the Departments of Pathology, Cardiology, and Cardiovascular Surgery, University of Padova, Italy.

Correspondence to Gaetano Thiene, MD, Department of Pathology, University of Padova Medical School, Via A. Gabelli, 61–35121 Padova, Italy.

A20-year-old man, previously asymptomatic, showed an incidental finding at echocardiography of a left ventricular mass. In the Figure, A is a two-dimensional echocardiogram in the apical four-chamber view showing a round mass (arrow), scarcely mobile, attached to the left ventricular anterolateral free wall. B shows the gross appearance of the mass removed at surgery: it looks soft and sessile, with a smooth surface, and is 10x15x15 mm in size and 2 g in weight. C, At histology, the tumor consists of a myxoid Alcian-positive matrix and polygonal cells forming capillary-like channels (Alcian PAS stain; magnification x200). D, At immunohistochemistry, the cells lining the capillary-like channels show a strong positivity for factor VIII–related antigen (ABC; magnification x200).

View larger version (110K): [in this window] [in a new window]   Figure 1. LV indicates left ventricle; RA, right atrium; RV, right ventricle.

The final diagnosis is left ventricular myxoma with prevalent angioblastic features (so-called "benign myxomatous endothelioma").

Footnotes

The editor of Images in Cardiovascular Medicine is Hugh A. McAllister, Jr, MD, Chief, Department of Pathology, St Luke's Episcopal Hospital and Texas Heart Institute, and Clinical Professor of Pathology, University of Texas Medical School and Baylor College of Medicine.

Circulation encourages readers to submit cardiovascular images to Dr Hugh A. McAllister, Jr, St Luke's Episcopal Hospital and Texas Heart Institute, 6720 Bertner Ave, MC1–267, Houston, TX 77030.

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