Dodd Jonathan D, Aquino Suzanne L, Holmvang Godtfred, Cury Ricardo C, Hoffmann Udo, Brady Thomas J, Abbara Suhny
Department of Radiology, Massachusetts General Hospital and Harvard Medical School, 55 Fruit St., Boston, MA 02114, USA.
AJR Am J Roentgenol. 2007 Jun;188(6):W550-3. doi: 10.2214/AJR.06.0996.
Cardiac septal aneurysms in adults are diagnosed when the interatrial or interventricular septal membrane deviates more than 10-15 mm to either side in the cardiac chamber. Routine non-ECG-gated chest CT does not have sufficient temporal and spatial resolution for adequate characterization of such an entity. We report the imaging findings of cardiac septal aneurysms depicted in two patients with ECG-gated cardiac MRI and in a third with ECG-gated cardiac 64-MDCT. Each aneurysm was initially believed to be a cardiac tumor on the basis of the appearance on non-ECG-gated chest CT or MRI.
Nonopacified blood can fill a cardiac septal aneurysm and mimic a pseudomass. It is important that radiologists recognize such an entity on chest CT and MRI because of the association with intracardiac shunting and stroke and to avoid misdiagnosis of an aneurysm as a cardiac tumor.
当心房或心室间隔膜在心腔内向任一侧偏移超过10 - 15毫米时，可诊断为成人心脏间隔瘤。常规非心电图门控胸部CT在时间和空间分辨率方面不足以充分表征此类病变。我们报告了两名接受心电图门控心脏MRI检查的患者以及一名接受心电图门控心脏64层MDCT检查的患者中所显示的心脏间隔瘤的影像学表现。基于非心电图门控胸部CT或MRI上的表现，每个动脉瘤最初都被认为是心脏肿瘤。
未显影的血液可填充心脏间隔瘤并模拟假肿块。放射科医生在胸部CT和MRI上识别此类病变很重要，因为其与心内分流和中风有关，且可避免将动脉瘤误诊为心脏肿瘤。
