Non-recurrent inferior laryngeal nerve with multiple arterial abnormalities.
Non-recurrent inferior laryngeal nerve (NRILN) is a rare embryologic anomaly that can increase the risk of injury during thyroid surgery. Although the association between the NRILN and an aberrant right subclavian artery has been reported, to date there have been no reports describing cases of NRILN with multiple vascular abnormalities. A 60-year-old man with papillary thyroid carcinoma and a history of right internal carotid artery occlusion by thrombosis was examined with magnetic resonance angiography (MRA). The right NRILN was found during a total thyroidectomy with surrounding lymph node dissection. MRA revealed an aberrant right subclavian artery and aplasia of the bilateral posterior communicating arteries composing the circle of Willis. This is the first clinical report demonstrating NRILN with multiple vascular abnormalities. Patients with NRILN must be examined for vascular anomalies and associated lesions such as aneurysms and thromboembolism.
Kobayashi
Masayoshi
M
Department of Otorhinolaryngology-Head and Neck Surgery, Mie University Graduate School of Medicine, Tsu, Mie, Japan. m-koba@doc.medic.mie-u.uc.jp
Yuta
Atsushi
A
Okamoto
Kosuke
K
Majima
Yuichi
Y
D000015:Abnormalities, Multiple / Q000175:diagnosis* / Q000473:pathology; D002291:Carcinoma, Papillary / Q000473:pathology / Q000601:surgery*; D002341:Carotid Artery Thrombosis / Q000175:diagnosis* / Q000473:pathology; D002343:Carotid Artery, Internal / Q000473:pathology; D002941:Circle of Willis / Q000002:abnormalities* / Q000473:pathology; D006801:Humans; D008197:Lymph Node Excision; D018810:Magnetic Resonance Angiography; D008297:Male; D008875:Middle Aged; D020769:Posterior Cerebral Artery / Q000002:abnormalities* / Q000473:pathology*; D012009:Recurrent Laryngeal Nerve / Q000002:abnormalities* / Q000473:pathology; D013348:Subclavian Artery / Q000002:abnormalities* / Q000473:pathology; D013964:Thyroid Neoplasms / Q000473:pathology / Q000601:surgery*; D013965:Thyroidectomy