Vocal Cord Lesions: Nodules vs. Polyps
Both conditions share a common site: The junction of the Anterior 1/3 and Posterior 2/3 of the vocal cord (area of maximum vibration).
1. Vocal Nodules
AKA: Singer’s Nodes / Screamer’s Nodes.
Definition: Benign, symmetrical lesions resulting from chronic vocal trauma.
Vocal Nodules
Features
- Demographics: Teachers, Actors, Pop singers, Assertive children.
- Laterality: Bilateral & Symmetrical.
- Appearance: Pin-head to half-pea size.
- Early: Soft, reddish, oedematous.
- Late: Greyish/white (fibrotic).
- Symptoms: Hoarseness, Vocal fatigue, Neck pain.
Pathogenesis (Chronic Process)
Chronic Vocal Abuse/Misuse
↓
Submucosal Oedema & Haemorrhage
↓
Hyalinization & Fibrosis
↓
Hyperplasia of Epithelium → Nodule
Management
- Early Stage: Conservative.
- Voice rest & Education.
- Speech Therapy (Essential).
- Late Stage / Adults: Surgery.
- Microlaryngoscopic excision (Cold steel or Laser).
- *Care taken to avoid vocal ligament.
2. Vocal Polyp
Definition: A soft, smooth, often pedunculated mass arising from the vocal cord.
Vocal Polyp
Features
- Demographics: Men (30-50 years).
- Risk Factors: Sudden shouting, Smoking, Allergy.
- Laterality: Unilateral.
- Appearance: Pedunculated; may flop up and down glottis.
- Symptoms:
- Hoarseness.
- Diplophonia (Double voice due to different vibratory frequencies).
- Dyspnoea/Stridor (if polyp is large).
Pathogenesis (Acute Event)
Sudden Shouting
↓
Haemorrhage in Cord
↓
Submucosal Oedema → Polyp
Management
- Primary Tx: Surgical Excision (Microlaryngoscopy).
- Follow-up: Speech therapy to prevent recurrence.
Comparison Summary
| Feature | Vocal Nodules | Vocal Polyp |
|---|---|---|
| Etiology | Chronic Abuse (Unnatural low tones/High intensity). | Sudden Shouting (plus Allergy/Smoking). |
| Pathology | Fibrosis, Hyalinization & Epithelial Hyperplasia. | Haemorrhage & Oedema. |
| Laterality | Bilateral (Symmetrical). | Unilateral. |
| Key Symptom | Vocal Fatigue / Pain. | Diplophonia / Stridor. |
| Treatment | Conservative first (Speech Tx). | Surgery first (Excision). |
📚 Ref: Diseases of Ear, Nose & Throat (Dhingra)
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