Okouchi M, Takagiwa J, Ichioka M, Marumo F
Department of Internal Medicine, Hokusin Sogo Hospital, Nagano, Japan.
Nihon Kyobu Shikkan Gakkai Zasshi. 1994 Sep;32(9):908-12.
A 31-year-old man, asymptomatic but with an abnormal shadow adjacent to the right tracheobronchial angle on chest roentogenogram, presented to our hospital. CT and MRI of the chest revealed this shadow to be a dilated azygos arch. The inferior vena cava was interrupted, at the intrahepatic portion, by the azygos continuation. There was also an abnormality of tracheobronchial branching. The right middle lobe bronchus gave rise to the upper lobe bronchus. The right B7 was absent though the left BX7 was present. The pulmonary arteries passed over the main bronchi bilaterally. Interruption of the inferior vena cava is often associated with significant cardiovascular and abdominal anomalies but only rarely with anomalies of tracheobronchial branching.
一名31岁男性，无症状，但胸部X线片显示右气管支气管角旁有异常阴影，遂来我院就诊。胸部CT和MRI检查显示该阴影为扩张的奇静脉弓。下腔静脉在肝内部分被奇静脉延续中断。气管支气管分支也存在异常。右中叶支气管发出上叶支气管。右B7缺如，而左BX7存在。双侧肺动脉跨过主支气管。下腔静脉中断常伴有显著的心血管和腹部异常，但很少伴有气管支气管分支异常。
