目的:该报告描述了非典型起源的双侧肩胛骨上动脉(SPSA)与神经血管异常结构共存。
方法:在91岁的福尔马林防腐男性尸体中鉴定出变异体,在签署知情同意书后,从身体捐赠计划中获得。
结果:左侧SPSA从腋窝动脉的第一部分发出,在臂丛神经外侧和内侧索之间,伴有肩胛骨上神经,穿过肩胛骨上横韧带下方.同侧共存的变异是胸外侧动脉倍增,肩胛骨下干形成,和肌皮神经重复。在右锁骨上区域,确定了SPSA重复。主要动脉来自甲状腺颈干,与颈横动脉共同,辅助SPSA来自肩背动脉。两个SPSA都越过肩胛骨上横韧带,而肩胛骨上神经在韧带以下.
结论:当前研究报告了双侧异常SPSA,起源于AA第1部分(左侧)和肩胛骨背动脉(右侧),与邻近的神经血管结构变异共存。左侧SPSA非典型地位于肩胛骨上横韧带下方。如此不同寻常的变化组合,在当前的研究中双边呈现,对放射科医生和外科医生来说可能是个挑战.
OBJECTIVE: The report describes a bilateral suprascapular artery (SPSA) of atypical origin in coexistence with neurovascular aberrant structures.
METHODS: The variants were identified in a 91-year-old formalin-embalmed male cadaver, derived from a body donation program after a signed informed consent.
RESULTS: The left-sided SPSA emanated from the 1st part of the axillary artery, coursed between the brachial plexus lateral and medial cords, accompanied by the suprascapular nerve, and passed below the superior transverse scapular ligament. Ipsilateral coexisted variants were the lateral thoracic artery multiplication, the subscapular trunk formation, and the musculocutaneous nerve duplication. In the right supraclavicular area, a SPSA duplication was identified. The main artery emanated from the thyrocervical trunk in common with the transverse cervical artery and the accessory SPSA emanated from the dorsal scapular artery. Both SPSAs coursed over the superior transverse scapular ligament, while the suprascapular nerve ran below the ligament.
CONCLUSIONS: The current study reported a bilateral aberrant SPSA, originating from the AA 1st part (left side) and from the dorsal scapular artery (right side), which coexisted with adjacent neurovascular structures\' variants. The left SPSA atypically coursed below the superior transverse scapular ligament. Such an unusual combination of variations, present bilaterally in the current study, may be challenging for radiologists and surgeons.