title: Unilateral breast uptake on radionuclide ventriculography.
abstract: 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.
authors.affiliation: From the Division of Nuclear Medicine, University of Ottawa, Ottawa, Ontario, Canada.
authors.forename: Matthieu
authors.initials: M
authors.lastname: Pelletier-Galarneau
authors.forename: Oyebola O
authors.initials: OO
authors.lastname: Sogbein
authors.forename: Xuan H
authors.initials: XH
authors.lastname: Pham
authors.forename: Lionel S
authors.initials: LS
authors.lastname: Zuckier
mesh_terms: D000328:Adult; D001940:Breast / Q000000981:diagnostic imaging*; D003971:Diastole; D005260:Female; D006801:Humans; D015635:Radionuclide Ventriculography; D013599:Systole