Previous stroboscopic studies of human vocal cord paralysis have been infrequent and have lacked documentation of the site of lesion. In order to study human laryngeal paralysis, the recurrent and superior laryngeal nerves were infiltrated unilaterally with lidocaine hydrochloride in three human volunteers. Vagal paralysis was simulated by combined (superior and recurrent) infiltration in one v...

Morbidity after thyroidectomy is related to injuries to the parathyroids, recurrent laryngeal (RLN) and external branch of superior laryngeal nerves (EBSLN). Mostly these are due to variations in the surgical anatomy. In this study we analyse the surgical anatomy of the laryngeal nerves in Indian patients undergoing thyroidectomy. Materials and Methods. Retrospective study (February 2008 to Feb...

The symptoms and signs of aneurysms of the thoracic aorta are due mainly to compression of surrounding mediastinal structures and depend on the size and location of the aneurysm. Compression of the trachea, bronchi, oesophagus, recurrent laryngeal nerve, bone, and superior vena cava is common, but pressure on the pulmonary artery has not been described in spite of its intimate relation to the a...

BACKGROUND The nonrecurrent inferior laryngeal nerve is an anomaly associated with the absence of the brachiocephalic artery (BCA) and the presence of arteria lusoria. METHODS The preoperative CT scans from 290 patients (9 nonrecurrent, 281 recurrent) were retrospectively reviewed. We identified the BCA or the arteria lusoria, and classified the relationship between the right subclavian arter...

Two children born with birth defects after intrauterine exposure to valproic acid are reported. The mothers took the drug throughout pregnancy as sole treatment for primary generalized epilepsy. The first baby showed facial dysmorphism, arachnodactyly and triphalangeal thumbs. The second had facial dysmorphism, severe laryngeal hypoplasia, tracheomalacia and an aberrant innominate artery that c...

OBJECTIVES Our aim was to present laryngovideostroboscopic findings in unilateral superior laryngeal nerve paresis and paralysis. STUDY DESIGN AND SETTING Retrospective case review, academic voice clinic. METHODS Blinded retrospective review of videostroboscopic recordings from cases confirmed by laryngeal electromyography. RESULTS Three cases of unilateral superior laryngeal nerve paresi...

Laryngeal schwannomas are rare, benign tumors, most often arising from the superior laryngeal nerve. We describe a case of a 68-year-old female with a laryngeal schwannoma of the recurrent laryngeal nerve after traumatic injury. We postulate that trauma to the recurrent laryngeal nerve during thyroidectomy or thyroplasty incited growth of a nerve sheath tumor. This is the first reported case of...

The association between superior laryngeal nerve (SLN) paresis and laryngeal granuloma formation has not been described earlier. The aim of this study was to present a series of patients with isolated unilateral SLN paresis who developed contralateral vocal process granulomas. The study design was a retrospective chart review including all patients presenting to Indiana University from February...

PURPOSE To carry out an anatomic study of superior laryngeal nerve in not preserved in formaldehyde and not frozen corpses. METHODS Thirty-eight male corpses from the Minas Gerais Medico-legal Institute (IML) were studied. In 18 corpses dissection was performed bilaterally and in 20 only on the left side, total number 56 nerves dissected. Their descriptive segments measurements and the anatom...