! ORL via Alexandros G.Sfakianakis on Inoreader: Recurrent laryngeal nerve landmarks during thyroidectomy

! ORL via Alexandros G.Sfakianakis on Inoreader

Recurrent laryngeal nerve landmarks during thyroidectomy Sep 1st 2015, 09:48 Publication date: Available online 31 August 2015 Source:European Annals of Otorhinolaryngology, Head and Neck Diseases Author(s): A.-R. Ngo Nyeki, L.-R. Njock, J. Miloundja, J.-E. Evehe Vokwely, G. Bengono ObjectiveThis study was designed to describe the various anatomical relations of the recurrent laryngeal nerve (RLN) during thyroid surgery in a Central African population.Patients and methodsA prospective study was conducted between January 2012 and December 2012 in 5 otorhinolaryngology and head and neck surgery departments in Cameroon and Gabon. All patients undergoing total or subtotal thyroidectomy or loboisthmectomy with recurrent laryngeal nerve dissection, with no history of previous thyroid surgery, RLN dissection or tumour infiltration of the RLN, were included.ResultsFifty-six patients were included, corresponding to 36 loboisthmectomies and 20 total or subtotal thyroidectomies. A total of 62 recurrent laryngeal nerves were identified: 32 on the right and 30 on the left. The course of the recurrent laryngeal nerve in relation to branches of the inferior thyroid artery (ITA) was retrovascular in 53.1% of cases on the right and 76.6% of cases on the left; transvascular in 15.6% of cases on the right and 13.4% of cases on the left. The course of the recurrent laryngeal nerve was modified by thyroid disease in 12.9% of cases. Six cases (9.7%) of extralaryngeal division of the recurrent laryngeal nerve were observed. No case of non-recurrent nerve was observed in this series.ConclusionThe anatomical relations of the recurrent laryngeal nerve with the inferior thyroid artery were very inconstant in this series and were predominantly retrovascular or transvascular in relation to the branches of the artery. The presence of extralaryngeal branches and modification of the course of the nerve by thyroid disease also introduced additional difficulties during recurrent laryngeal nerve dissection. The anatomical relations of the right recurrent laryngeal nerve in this African population differ from the classically described prevascular course.

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