Thallium-201 myocardial SPECT in a patient with mirror-image dextrocardia and left bundle branch block.
A 53-year-old male patient with a previous diagnosis of situs inversus with mirror-image dextrocardia underwent thallium-201 (Tl-201) stress-redistribution myocardial perfusion single photon emission computed tomography (SPECT). Electrocardiogram (ECG) obtained on right hemithorax revealed constant complete left bundle branch block. Tl-201 stress-redistribution SPECT images revealed abnormal perfusion with reversible ischemia in the anteroseptal, septal and inferoseptal walls. Coronary angiography performed 1 month after SPECT study was normal. This case illustrates that false positive reversible perfusion defects can be seen in patients with mirror-image dextrocardia associated with constant complete left bundle branch block. To our knowledge, this is the first reported case of mirror-image dextrocardia and constant complete left bundle branch block with false positive Tl-201 SPECT findings.
Turgut
Bülent
B
Department of Nuclear Medicine, Cumhuriyet University, School of Medicine, Sivas, Turkey. bulturgut@yahoo.com
Kitapci
Mehmet T
MT
Temiz
N Hakan
NH
Unlü
Mustafa
M
Erselcan
Taner
T
D002037:Bundle-Branch Block / Q000150:complications / Q000175:diagnosis* / Q000000981:diagnostic imaging; D003324:Coronary Artery Disease / Q000150:complications / Q000175:diagnosis / Q000000981:diagnostic imaging*; D003914:Dextrocardia / Q000150:complications / Q000175:diagnosis / Q000000981:diagnostic imaging*; D003937:Diagnosis, Differential; D004562:Electrocardiography; D005189:False Positive Reactions; D006801:Humans; D008297:Male; D008875:Middle Aged; D019275:Radiopharmaceuticals; D013793:Thallium; D015899:Tomography, Emission-Computed, Single-Photon / Q000379:methods*
D019275:Radiopharmaceuticals; C027549:thallium chloride; D013793:Thallium