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ECHOCARDIOGRAM OF THE MONTH |

Right Ventricular Mass and Pulmonary Infiltrates With a Small Ventricular Septal Defect

Kerry Kaplan, MD; James V. Talano, MD
Arch Intern Med. 1979;139(9):1035-1037. doi:10.1001/archinte.1979.03630460067020.
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A 28-year-old man with a known cardiac murmur since birth complained of a two-month history of cough, fever, and malaise. On physical examination the patient was febrile, and a pansystolic murmur and thrill were present in the fourth left intercostal space. The second heart sound was normal.

Below is a M-mode echocardiogram (Fig 1) taken at the level of the tricuspid valve where an echo-dense mass (X) is seen. The anterior (atl) and posterior (ptl) tricuspid leaflets are identified. What is your diagnosis?

The M-mode echocardiogram was obtained by angling the transducer medially from the standard position of the mitral valve. Portions of the tricuspid valve leaflets are seen with dense echoes in the vicinity of the valve. Angulation of the transducer downward from the mass shows normal movement of the tricuspid leaflet (last two complexes) indicating that the mass is probably not attached to the tricuspid valve leaflets. Due

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