Matsunaga N, Hayashi K, Aikawa H, Maeda H
Department of Radiology, Nagasaki University School of Medicine, Japan.
Acta Radiol. 1989 Sep-Oct;30(5):487-9.
An unusual systemic arteriovenous malformation arising from the left 9th intercostal artery, taking a caudal course through the left paravertebral veins, eventually drained into the left ascending lumbar vein, as illustrated at computed tomography and angiography. An embryologic maldevelopment of the azygos venous system is not the only possible explanation for venous drainage in the caudal direction. We believe that predominant venous drainage can take place in either direction because of the potentially bidirectional flow in the vertebral venous systems.
一种不寻常的系统性动静脉畸形，起源于左第9肋间动脉，沿尾侧走行穿过左椎旁静脉，最终汇入左腰升静脉，计算机断层扫描和血管造影显示如此。奇静脉系统的胚胎发育异常并非尾侧方向静脉引流的唯一可能解释。我们认为，由于椎静脉系统中潜在的双向血流，主要的静脉引流可以向任一方向发生。
