wrecking ball effect

A tethered ball-like effect of a pedunculated tumour in the cardiac atria or ventricles, often due to a calcified myxoma, which may damage the mitral valve, rupture chordae tendineae or cause severe mitral regurgitation as it pounds against endocardial structures
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.

wrecking ball effect

Cardiology A tethered ball-like effect of a pedunculated tumor in the atrial or ventricular chambers, often due to a calcified myxoma, which may damage the mitral valve, rupture chordae tendineae or cause severe mitral regurgitation, as it pounds against endocardial structures
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.