Left Main Coronary Artery Atresia in Young Man Examined With 99mTc-Tetrofosmin SPECT: A Rare and Challenging Anomaly.
A young man underwent Tc-tetrofosmin cardiac SPECT/CT for the evaluation of the 8-month history of exertional dyspnea without chest pain. Tc-tetrofosmin SPECT demonstrated absence of perfusion defects and a mildly decreased uptake in post-stress images, consistent with artifact, in the inferior myocardium. Cardiac catheterization showed a large right and a small left coronary artery opacified retrogradely by right collateral vessels without connections between the left main and the left coronary artery. In patients with anomalous coronary arteries, Tc SPECT can shows absence of perfusion defects, in the presence of a collateral circulation.
From the Departments of *Nuclear Medicine, and †Cardiology, Santa Maria della Misericordia Hospital; ‡Section of Adult Congenital and Adult Heart Disease, Cardiovascular Diagnosis and Endoluminal Interventions, Rovigo General Hospital, Rovigo, Italy; and §Department of Radiology, University of Southern California, Los Angeles, CA.
Lucia
L
Rampin
Massimo
M
Rinuncini
Marco
M
Zuin
GianLuca
G
Rigatelli
Loris
L
Roncon
Patrick M
PM
Colletti
Domenico
D
Rubello
D000328:Adult; D003324:Coronary Artery Disease / Q000000981:diagnostic imaging* / Q000473:pathology / Q000503:physiopathology; D006801:Humans; D008297:Male; D009943:Organophosphorus Compounds; D015609:Organotechnetium Compounds; D015899:Tomography, Emission-Computed, Single-Photon
D009943:Organophosphorus Compounds; D015609:Organotechnetium Compounds; C078700:technetium tc-99m tetrofosmin