-Definition-Two common types-Therapy for laryngetomy

Definition Related to structural deviations of the

vocal tract Or to diseases of specific structures of the

vocal tract Examples

Cleft palate (structural deviation) Viral papilloma of larynx (vocal tract

disease)

Treatment Medical Dental Surgical Voice therapy by SLP

Improve the physiologic function of a damaged larynx

Develop the best voice possilbe

Cause/etiology Smoking Use of smokeless tobacco Chronic infections Herpes Repeated trauma to irritated site Leukoplakia ( 黏膜白斑病 )

Location Lip and intraoral - articulation Palatal and velar - articulation,vocal

resonance and swallow Laryngeal - voice

Types of laryngeal cancer Supraglottal Glottal Subglottal

Treatment for laryngeal cancers Combination of radiation therapy and

surgery – small to moderate lesions

Hemilaryngectomy, supraglottal laryngectomy or total laryngectomy - extensive cancers

Laryngeal cancer

Tongue cancer

Lip cancer

Cause/etiology Unknown ， vocal abuse and

laryngopharyngeal reflux(acquired)

Location Medial edge of the VF All segement of the edge of the VF Bilaterally symmetrical Superficial layer of the mucosa or the

vocal ligament and muscle Types

Physiological - normal voice Congenital - abnormal mucosal wave Acquired - abnormal mucosal wave

Acoustic changes

Treatment Surgery

Incision Injection (collagen, fat,etc) Mucosal slicing

Followed by voice therapy Reducing hyperfunction Pitch shifts Loudness changes etc

Function of larynx Prevent aspiration

Three valve The true folds The ventricular folds The aryepiglottic folds

Total laryngectomy alters respiration, swallowing and speech.