Haertel M, Wiederkehr P, Zaunbauer W
Institut für Diagnostische Radiologie, Kantonsspital St. Gallen.
Rofo. 1988 Sep;149(3):267-70. doi: 10.1055/s-2008-1048339.
Twenty-four patients with dissecting aortic aneurysms have been examined by CT and possible causes of mistaken diagnosis are discussed. Failure to diagnose a dissection by CT may be due to atypical localisation and thrombosis of the aortic dissection; dissections of small volume, particularly in the ascending aorta; failure to demonstrate an intimal flap and inadequate contrast enhancement. A false positive diagnosis may be due to fibrotic, inflammatory or neoplastic periaortic changes, aneurysm of the sinus of Valsalva, or artifacts.
对24例主动脉夹层动脉瘤患者进行了CT检查，并讨论了误诊的可能原因。CT未能诊断出夹层可能是由于主动脉夹层的非典型定位和血栓形成；小体积夹层，尤其是升主动脉夹层；未能显示内膜瓣以及对比增强不足。假阳性诊断可能是由于主动脉周围的纤维化、炎症或肿瘤性改变、瓦尔萨尔瓦窦瘤或伪影。
