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Embryological Development

Question
59 out of 71
 

Pharyngeal Pseudosulcus is seen secondary to: (LQ) [AIIMS Nov 20 12)



A Vocal abuse

B Laryngopharyngeal reflux

C Tuberculosis

D Corticosteroid usage

Ans. B laryngopharyngeal reflex Ref. Ballenger's Otolaryngology J 7th/ed p 886; Scott Brown's 7th/ed p 2238)

Vocal Sulcus/Laryngeal Sulcus

It is a groove along the mucosa and can be classified into three types:

Laryngeal sulcus

Laryngeal Pseudosulcus (Pseudosulcus

Laryngeal True Sulcus (Suleus vergeture)

Sulcus vocalis Vocalis

Pseudosulcus arises due to swelling of the subglottic area secondary to laryngotracheal reflux. It refers to infraglottic edema extending from arterior commissure to posterior larynx

The pseudosulcus is located between the true vocal folds and the subglottic swelling

True sulcus is related to scarring of the vocal fold in the phonatory strking zone

This is located within the true vocal folds at the site of the adherence of vocal fold epithelium to the vocal ligament

Seen in deeper layers of ligament

Note

• It is believed that vocal sulcus / laryngeal sulcus are more common in Indian subcontinent.

• They frequently present with persistent dysphonia following puberty.

Management

Phonosurgical treatment,. either excising the sulcus, injecting collagen or fat to boost the underlying layer or giving a parallel incision in the mucosa running in cephalad to cordal direction to break up the linear scar and vocal fold.

Embryological Development Flashcard List

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