What are Voice Disorders?
Voice disorders (dysphonia) refer to any condition in which the quality, pitch, or loudness of the voice differs significantly from what is expected for a person's age, sex, or cultural background. The human voice is produced by the precise vibration of the vocal cords (vocal folds) — a pair of mucosa-covered muscle bundles stretched across the larynx. Any structural or functional change that disrupts this vibration produces dysphonia. Voice disorders are among the most common conditions seen in ENT practice, affecting professional voice users (singers, teachers, public speakers, call center workers, lawyers) with particular frequency, though they can occur in anyone.
Common Vocal Cord Lesions
Vocal Cord Nodules
Vocal cord nodules are bilateral, symmetrical benign lesions that develop at the mid-membranous portion of each vocal cord — precisely the point of maximum vibratory stress. They are caused by vocal overuse or misuse and are often called "singer's nodes" or "teacher's nodes." Nodules begin as soft, edematous (waterlogged) swellings and, if the underlying voice misuse continues, mature into firm, fibrous lesions. They cause a characteristic rough, breathy, effortful voice quality.
Vocal Cord Polyps
Vocal cord polyps are typically unilateral, fluid-filled lesions arising from the superficial lamina propria of the vocal cord. They are often precipitated by a single vocal trauma (a moment of extreme shouting, for example) superimposed on a background of vocal overuse or reflux. Polyps cause hoarseness, voice breaks, and a diplophonic (double-pitched) voice quality.
Vocal Cord Cysts
Vocal cord cysts are sub-epithelial or deeper lesions filled with mucus or keratin. Mucous retention cysts develop from obstructed mucosal glands; epidermoid cysts are congenital or develop from implantation of surface epithelium. Like polyps, they are typically unilateral and cause progressive hoarseness.
Diagnosis: Videolaryngostroboscopy
Accurate diagnosis of vocal cord pathology requires more than a standard laryngoscopy. Videolaryngostroboscopy uses a stroboscopic light source to create a slow-motion illusion of the vocal cord vibration, allowing the examiner to assess the mucosal wave — the travelling ripple of mucosa that is a critical indicator of vocal cord health. Lesions that appear subtle under white light become clearly visible under stroboscopic examination, and early changes in the mucosal wave pattern can alert the surgeon to lesions not yet visible to the naked eye.
Treatment
Voice Therapy
Voice therapy with a speech-language pathologist is the first-line treatment for vocal cord nodules and early-stage lesions. By correcting the underlying voice misuse patterns — excessive vocal effort, habitual throat-clearing, inadequate hydration — many nodules and soft polyps will regress without surgery. Voice therapy also prepares the patient for optimal post-operative recovery when surgery is eventually required.
Microlaryngoscopy
When lesions do not respond to conservative management, or when polyps or cysts require surgical removal, microlaryngoscopy under general anesthesia is performed. The patient is positioned supine with the neck extended; a rigid laryngoscope is introduced to expose the vocal cords, and microsurgical instruments — or a CO₂ laser — are used to precisely remove the lesion with minimal disruption to the surrounding healthy vocal cord mucosa. The procedure typically takes 20–30 minutes.
After microlaryngoscopy, strict voice rest for approximately 1 week is prescribed to allow the vocal cord mucosa to re-epithelialize without the disruption of vibration. Voice therapy is resumed after the rest period to consolidate the results and address the habits that led to the lesion.
Frequently Asked Questions
How long does dysphonia last after microlaryngoscopy?
Voice quality typically improves noticeably within 2–3 weeks after surgery. Full vocal recovery — the return of optimal resonance, range, and endurance — occurs over 2–3 months, particularly in professional voice users.
Will voice disorders recur after surgery?
The risk of recurrence is closely linked to whether the underlying cause is addressed. Voice therapy after surgery dramatically reduces recurrence rates by correcting the vocal habits that created the lesion in the first place.
Is surgery the only option for vocal cord polyps?
Small, soft polyps discovered early may respond to intensive voice therapy and reflux management. However, most established polyps require surgical removal for a reliable and durable result.
