Mitra Priyam, Saifi Aamir, Mishra Vishal, Agarwal Arjun, Arora Siddharth, Meharchandani Monika
Oral and Maxillofacial Surgery, Institute of Dental Sciences, Bareilly, Uttar Pradesh India.
Head of Department, Surgical Oncology, Rohilkhand Medical College and Hospital, Bareilly, Uttar Pradesh India.
Indian J Otolaryngol Head Neck Surg. 2025 Mar;77(3):1660-1663. doi: 10.1007/s12070-025-05373-z. Epub 2025 Feb 18.
Duplicate cranial nerves are fundamentally rare anatomical variants. Few case reports have documented cranial nerve duplication. Proper understanding of the anatomy is important to prevent iatrogenic injury during any surgical procedure. We present a case report of duplicate vagus nerves identical in size and thickness identified during neck dissection procedure. A 44-year-old gentleman diagnosed with Squamous Cell Carcinoma of Right Parotid Gland underwent Total Parotidectomy with Elective Neck Dissection. During carotid sheath microdissection, two parallel nerve tracts were identified. The two nerves were identical in size and width. Proximal dissection confirmed that the two nerves were independent of one another and neither was a branching segment. This is the one of the few reported cases of duplicate vagus nerves identified. The authors would like to highlight the rare anatomical variant of vagus nerve and emphasize on knowledge of proper surgical anatomy to prevent inadvertent injury to cranial nerve and any vital structures during surgical procedure.
重复的颅神经是极为罕见的解剖变异。很少有病例报告记录颅神经重复的情况。正确理解其解剖结构对于防止任何手术过程中的医源性损伤至关重要。我们报告一例在颈部解剖手术中发现的大小和粗细相同的双侧迷走神经病例。一名44岁被诊断为右腮腺鳞状细胞癌的男性接受了全腮腺切除术及选择性颈部解剖。在颈动脉鞘显微解剖过程中，发现了两条平行的神经束。这两条神经大小和宽度相同。近端解剖证实这两条神经相互独立，且均不是分支段。这是已报道的少数双侧迷走神经重复病例之一。作者希望强调迷走神经这种罕见的解剖变异，并强调了解正确的手术解剖知识以防止手术过程中意外损伤颅神经及任何重要结构。
