Vocal nodules and Vocal polyp

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
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
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)

💬 Comments

No comments:

Post a Comment