Vocal fold immobility with normal LEMG: A range of possibilities

Abstract

Objective: The objective of this paper is to study the etiology of vocal fold immobility with non-pathological LEMG.

Methods: A retrospective study was performed on patients who presented with vocal fold immobility and underwent LEMG from 2009 to 2017. Those patients with normal LEMG findings were selected. The different causes of vocal fold impairment were studied.

Results: Of the 120 patients included in this study, 15 had a normal LEMG recording. The different etiologies of vocal fold immobility were idiopathic, central nervous system damage, iatrogenic, and external compression.

Conclusions: Vocal fold immobility and vocal fold paralysis are not equal terms. Vocal fold immobility with normal LEMG has a heterogeneous group of causes. It is not correct to assume that the major cause of immobility in patients with normal LEMG is always cricoarytenoid joint fixation.

Keywords: Anquilosis cricoaritenoidea; Cricoarytenoid ankyloses; Cricoarytenoid fixation; Electromiografía laríngea; Fijación cricoaritenoidea; Inmovilidad de cuerdas vocales; Laryngeal electromyography; Parálisis de cuerdas vocales; Vocal fold immobility; Vocal fold paralysis.