Key result
Lactating breast uptake can significantly underestimate LVEF on equilibrium radionuclide ventriculography.
Why the study?
Unilateral breast uptake on gated equilibrium radionuclide ventriculography can cause significant underestimation of left ventricular ejection fraction and mimic cardiac abnormalities, a phenomenon not previously reported.
Case Report (n=1)
Gated equilibrium radionuclide ventriculography is frequently used to measure the left ventricular ejection fraction. We report a case of unilateral breast activity resulting in significant underestimation of the left ventricular ejection fraction, which mimicked a left ventricular aneurysm, pseudoaneurysm, or an intrathoracic vascular mass. Unilateral breast uptake, in the absence of gastric activity, was presumed because of increased blood pool in the lactating breast, a finding not previously reported in the literature. This case is also presented to emphasize the importance of localizing abnormalities based on a review of tomographic images or images taken in at least 2 orthogonal projections.
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Pelletier‐Galarneau et al. (2014) conducted a case report in Unilateral breast activity mimicking left ventricular abnormalities (n=1). Gated equilibrium radionuclide ventriculography was evaluated. Unilateral breast uptake during gated equilibrium radionuclide ventriculography in a lactating breast can result in significant underestimation of the left ventricular ejection fraction.
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