单侧的

Figure 9. Case 7. Additional vessel (purple) behind the 4-chamber view next to the aorta (red). This vessel represents an azygous or hemizygous continuation of an interrupted inferior vena cava.

图9病例7四腔心切面显示靠近主动脉（红色）处的额外的一条脉（紫色）。这条血管表示的是下腔脉中断后在单侧的延续。