Double-Chambered Left Ventricle: Unusual Presentation with an Apical Defect in a Thallium Scan in a Middle-Aged, Asymptomatic Woman.
A left ventricular apical filling defect was found in a whole-body thallium scan performed for routine follow-up for surgically cured thyroid cancer in a 51-year-old woman. She had no cardiovascular symptoms, and her electrocardiogram at rest and during exercise was unremarkable. Transthoracic and transesophageal echocardiography revealed a double-chambered left ventricle. A prominent fibromuscular ridge distal to the papillary muscles was seen dividing the left ventricular cavity into a small apical portion and a large basal portion. There was no significant intraventricular gradient. No treatment was necessary, and the patient has remained asymptomatic in a 4-year follow-up.
Rickli
Hans
H
Echocardiography Laboratory, Division of Cardiology, University Hospital, Raemistr. 100, 8091 Zurich, Switzerland.
Attenhofer Jost
Christine H.
CH
Locher
Johannes T.
JT
Jenni
Rolf
R