Fanselow Nicholas R, Wallace Nolan, Sehi Daniel, Coomar Lokesh, Martin John, Tan Yun, Daly Daniel T
Center for Anatomical Science and Education, Department of Surgery, Saint Louis University School of Medicine, Saint Louis, MO 63104, USA.
Case Rep Surg. 2021 Nov 18;2021:7430752. doi: 10.1155/2021/7430752. eCollection 2021.
Several thoracic vasculature variations were observed in an 81-year-old male cadaver during routine dissection. These included 5 common trunks of posterior intercostal arteries, a descending branch of the right vertebral artery, and atypical neurovascular relationships within intercostal spaces. On the right side, two common trunks of posterior intercostal arteries were observed supplying the 4th-7th intercostal spaces and 9th-11th intercostal spaces, respectively. There was also a small accessary branch supplying the 9th intercostal space. The first three posterior intercostal spaces on the right were supplied by a descending branch of the vertebral artery. On the left side, three common trunks of posterior intercostal arteries were encountered, supplying intercostal spaces 3-5, 6-7, and 11 plus the subcostal space. An atypical neurovascular relationship was observed in the right 6th intercostal space, as well as the left 2nd, 3rd, and 6th intercostal spaces. This is the first case report that presents 5 common trunks of posterior intercostal arteries, as well as common trunks in conjunction with other arterial variation in the posterior thoracic wall. These variations carry a high level of clinical significance and may be helpful in guiding decision-making related to surgical procedures related to the posterior thoracic cavity and spine.
在对一名81岁男性尸体进行常规解剖时，观察到了几种胸段血管变异情况。这些变异包括5支肋间后动脉的共同主干、右椎动脉的一支下行分支以及肋间间隙内非典型的神经血管关系。在右侧，观察到两支肋间后动脉共同主干，分别供应第4 - 7肋间间隙和第9 - 11肋间间隙。还有一支小的副支供应第9肋间间隙。右侧前三个肋间间隙由椎动脉的一支下行分支供应。在左侧，遇到三支肋间后动脉共同主干，分别供应第3 - 5肋间间隙、第6 - 7肋间间隙以及第11肋间间隙加肋下间隙。在右侧第6肋间间隙以及左侧第2、3和6肋间间隙观察到了非典型的神经血管关系。这是首例报告呈现5支肋间后动脉共同主干以及胸后壁其他动脉变异合并共同主干的病例。这些变异具有高度临床意义，可能有助于指导与后胸腔和脊柱相关手术操作的决策制定。
