Saint Louis University School of Medicine, Saint Louis, MO, United States.
Center for Anatomical Science and Education, Saint Louis University School of Medicine, Saint Louis, MO, United States.
Folia Morphol (Warsz). 2024;83(1):215-220. doi: 10.5603/FM.a2023.0003. Epub 2023 Jan 23.
A 77-year-old female cadaver was observed to have a rare branching pattern of the right axillary artery (AA). The first part of the AA typically gives off only a superior thoracic artery (STA) but was observed to give off three branches in the case: a lateral thoracic artery (LTA), a thoracoacromial trunk, and a large common trunk (CT). The LTA travelled to provide a variant STA to the 1st and 2nd intercostal spaces. The CT provided an accessory LTA and accessory thoracodorsal artery before bifurcating into a subscapular artery (SA) and posterior humeral circumflex artery. As expected, the SA further divided into the circumflex scapular artery and thoracodorsal artery. A pectoral artery and the anterior humeral circumflex artery originated directly from the second and third parts of the AA, respectively. Knowledge of AA branching variations is of great clinical significance to anatomists, radiologists, and surgeons due to the high rate of injury to this artery.
观察到一位 77 岁女性尸体的右腋窝动脉（AA）具有罕见的分支模式。AA 的第一部分通常只发出一条胸上动脉（STA），但在该病例中观察到发出了三条分支：胸外侧动脉（LTA）、胸肩峰动脉干和一条大的总干（CT）。LTA 行进以向第 1 和第 2 肋间隙提供变体 STA。CT 在前部分叉为肩胛下动脉（SA）和后肱动脉环后，提供了一条副 LTA 和副胸背动脉。如预期的那样，SA 进一步分为旋肩胛动脉和胸背动脉。胸肌动脉和前肱动脉环分别直接发自 AA 的第二和第三部分。由于该动脉受伤率很高，因此 AA 分支变异的知识对解剖学家、放射科医生和外科医生具有重要的临床意义。
