A new type of non-recurrent inferior laryngeal nerve in a cadaver with a right retroesophageal subclavian artery
Journal Title: International Journal of Anatomical Variations - Year 2017, Vol 10, Issue 2
Abstract
The presence of the retroesophageal right subclavian artery predicts the presence of a right non-recurrent inferior laryngeal nerve (NRILN). Three different right NRILNs have been previously described: Types Ia, Ib and II. This case describes a new variant of right NRILN, termed Type III, which arises from the vagus nerve as it exits the jugular foramen. Unlike previously described NRILNs, which enter the inferior aspect of the larynx, the Type III NRILN enters the larynx through the thyrohyoid membrane. The unusual course of the Type III NRILN makes it vulnerable to injury during neck surgeries.
Authors and Affiliations
Newton BW, Rodgers SA, Rau JN, Hong MY, Terreberry RR RR
Keywords
Related Articles
- EP ID EP597669
- DOI -
- Views 22
- Downloads 0
Variant origin and course of the left colic artery: An embryological perspective
The Variations in branching pattern of abdominal arteries are common. These variations are usually due to the changes occurring during the development of vessels. Although the blood supply of the gut is segmental in natu...
Morphological variation of thoracic splanchnic nerves in selected Ethiopian cadavers, Gondar and Mekelle Ethiopia
Background: Patients with chronic pancreatic carcinoma and cancer of the pancreas often experience severe pain. Sympathatictomy and celiac ganglia blockage or distraction has been applied with varying degree of efficacy...
An unusual branching pattern of the axillary artery
Variations in the branching pattern of axillary artery are frequently found. Knowledge about the variations in the branching pattern of Axillary artery is important for surgeons to avoid intraoperative injuries in axilla...
Variation of posterior deltoid muscle
During a routine dissection, bilateral posterior variants of the deltoid muscle, with an interesting orientation of muscle fibers, was discovered on a 78-year-old female cadaver. These variants show an almost perpendicul...
Anatomical variation of Jugulo-subclavian venous confluence
Variations of superficial veinous dranaige are very common in the head and neck regions. The jugular veins display disparities in its development and pathway. During a routine dissection study with the medical students o...