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(Circulation. 2002;106:e63.)
© 2002 American Heart Association, Inc.

Images in Cardiovascular Medicine

Feeding Artery of a Left Atrial Myxoma Demonstrated by Three-Dimensional Volume-Rendering Images With Multislice Computed Tomography

Nobusada Funabashi, MD; Nobuyuki Komiyama, MD; Hiroshi Hasegawa, MD; Hideyuki Kato, RT; Yutaka Yamamoto, MD; Katsuya Yoshida, MD; Issei Komuro, MD

From the Department of Cardiovascular Science and Medicine (N.F., H.H., Y.Y., K.Y., I.K.), Chiba University Graduate School of Medicine, and Center for Cardiovascular Interventions (N.K., I.K.) and Department of Radiology (H.K.), Chiba University Hospital, Chiba, Japan.

Correspondence to Issei Komuro, MD, Department of Cardiovascular Science and Medicine, Chiba University Graduate School of Medicine, 1-8-1 Inohana, Chuo-ku, Chiba City, Chiba 260-8670, Japan. E-mail komuro-tky@umin.ac.jp

An extract of the first 250 words of the full text is provided, because this article has no abstract.

An 81-year-old man had a mass in the left atrium (LA) that was detected by transthoracic echocardiography at another hospital. To evaluate the characteristics of the mass, ECG-gated enhanced multislice computed tomography (CT) (Aquilion, Toshiba) was performed with a 1-mm slice thickness and helical pitch of 1.0. After intravenous injection of 100 mL of iodinated contrast material (30%), CT scanning was performed with retrospective ECG-gated reconstruction. After acquisition, volume data were extracted from end-diastole, and volume-rendering images were made on a workstation (M900, Zio).

Axial source images showed a mass that was partially enhanced by the contrast material with calcification in the LA, which suggested that the mass was not a thrombus but a tumor (Figure 1). In the 3-dimensional volume-rendering images, an aberrant artery was observed from the proximal portion of the left circumflex branch to the LA (Figure 2). Conventional coronary angiography revealed that all coronary arteries were angiographically normal and that there was a feeding artery from the proximal portion of the left circumflex branch to the LA (Figure 3). After those examinations, the mass in the LA was resected and diagnosed as a myxoma.

View larger version (77K): [in this window] [in a new window]   Figure 1. Axial source images of multislice CT. A, Routine image showing calcification in the LA (arrow). B, Enhanced image revealing a mass with calcification in the LA (arrowhead). The mass was partially enhanced by the contrast material.

View larger version (54K): [in this window] [in a new window]   Figure 2. Cut-plane volume-rendering images using end-diastolic data of enhanced multislice CT. Superior anterior view showed an aberrant . . . [Full Text of this Article]

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