Watanabe M, Sato M, Oshika Y, Aoki T, Takagi K, Tanaka S, Ogata T, Tanaka M, Kobayashi H
Department of Surgery II, National Defense Medical College, Saitama, Japan.
Nihon Kyobu Shikkan Gakkai Zasshi. 1993 Dec;31(12):1623-8.
Diagnosis of intralobar pulmonary sequestration has required demonstration of systemic blood supply by arteriography. We report two cases in which retrocardiac abnormal shadows were observed on chest radiographs and aberrant arteries arising from the descending aorta toward the sequestrum were demonstrated by magnetic resonance imaging (MRI). The sequestra were observed as high intensity area suggesting cystic lesions on T2-weighted MRI. In both cases, the sequestra were excised and aberrant arteries (5 mm and 10 mm in diameter) arising from the aorta were recognized at surgery. Both cases were diagnosed as intralobar sequestrations histopathologically. MRI is a safe noninvasive alternative for diagnosis of pulmonary sequestration instead of arteriography in some cases with a larger aberrant artery.
叶内型肺隔离症的诊断过去需要通过动脉造影来证实其体循环供血。我们报告两例病例，胸部X线片上观察到心后区异常阴影，磁共振成像（MRI）显示降主动脉发出异常动脉朝向隔离肺。在T2加权MRI上，隔离肺表现为提示囊性病变的高信号区。两例均行手术切除，术中均发现主动脉发出的异常动脉（直径分别为5毫米和10毫米）。两例经组织病理学诊断均为叶内型肺隔离症。在某些异常动脉较大的病例中，MRI是一种安全的非侵入性方法，可替代动脉造影用于肺隔离症的诊断。
