Laryngology Flashcards
Most common pathogen in viral laryngitis
Rhinovirus
Can also see parainfluenza, RSV, adenovirus, flu, pertussis
What are the clinical tools used to assess for LPR?
Reflux Symptom Index (RSI)
Reflux Finding Score (RFS)
Where is tuberculous laryngitis typically located?
Posterior glottis (interarytenoids)
Forms of chronic infectious laryngitis
Tuberculous laryngitis
Syphilitic laryngitis
Rhinoscleroma of larynx
Leprosy
What can cause laryngeal chondritis?
Relapsing polychondritis (50% of RP pts)
Radiation
Infectious (TB, syphilis, septic laryngitis)
What is the most commonly involved laryngeal cartilage involved in laryngeal chondritis?
Thyroid cartilage
How do the various fungal laryngitis bugs look?
Candida: White plaques
Histo/Blasto: Ulceration
Coccidio: Nodule
What are the benign laryngeal tumors?
Chondroma
Granular cell tumor
Recurrent respiratory papillomatosis
Most common site in the larynx for a chondroma
Posterior cricoid cartilage (hyaline)
Where do laryngeal granular cell tumors arise from?
Schwann cells in the posterior true vocal fold or arytenoids
What is seen on histology of laryngeal granular cell tumors?
Pseudoepitheliomatous hyperplasia (often confused for SCCa)
Presentation of laryngeal sarcoid
Supraglottic submucosal mass
epiglottis most common
Presentation of laryngeal GPA
Mucosal ulcerations
Subglottic mass/stenosis
Presentation of laryngeal amyloidosis
Supraglottic mass covered by mucosa
Which laryngeal joint is most commonly affected by RA?
Cricoarytenoid
What laryngeal sites are involved in wegener’s, sarcoid, and amyloid?
Sarcoid: Supraglottis
Amyloid: Supraglottis
Wegener’s: Subglottis
What should you have patients say if you believe them to have ADductor spasmodic dysphonia?
ABductor?
ADductor: 80-89
ABductor: 60-69
Treatment for ADductor spasmodic dysphonia
Botox injection into the thyroarytenoid muscle
How does a person’s voice change in response to hearing loss?
SNHL: Louder
CHL: Louder or sometimes quieter
What causes diplophonia?
Recruitment of false cords or asymmetric mass
What is seen on laryngoscopy in VCD?
Posterior glottic chink
What type of stridor is heard with supraglottic obstruction?
Inspiratory
What type of stridor is heard with glottic obstruction?
Inspiratory or biphasic
What type of stridor is heard with subglottic obstruction?
Biphasic
What type of stridor is heard with intrathoracic obstruction?
Expiratory
What is the maximum trach tube cuff pressure?
25 mmHg
Any higher will exceed capillary hydrostatic pressure.
What is the most common pathogen in laryngitis?
Rhinovirus
What is seen on FFL in tuberculous laryngitis?
Granulation and ulcerative tissue in posterior glottis. Typically interarytenoid.
What non-classical infectious pathogens can infect the larynx?
H. flu (epiglottitis) Syphilis TB Leprosy Klebsiella rhinoscleromatis Candida, Aspergillus, endemic fungi
What is the most commonly involved cartilage in laryngeal chondritis?
Thyroid cartilage
What is seen on endoscopy in laryngeal chondritis?
Pale laryngeal mucosa
What are the benign neoplasms of the larynx?
Chondroma
Granular cell tumor
RRP
Vascular tumors (hemangioma, paraganglioma)
Where is the most common site of laryngeal chondroma?
Posterior cricoid cartilage
Where do laryngeal granular cell tumors arise?
Posterior portion of true cords; arytenoids
From what do laryngeal granular cell tumors arise?
Schwann cells
What is the risk of malignant degeneration in laryngeal granular cell tumor?
3%
Why are laryngeal granular cell tumors sometimes confused with SCC?
They can induce pseudoepitheliomatous hyperplasia around their borders
Where in the larynx can amyloidosis deposit?
Glottis & subglottis
What causes hereditary angioedema?
C1 esterase inhibitor deficiency
Acute treatment of hereditary angioedema
FFP
C1 or kallikrein inhibitors
Bradykinin receptor antagonist
What are the causes of Reinke’s edema?
LPR Smoking Hypothyroidism Vocal abuse Cough/throat clearing
Where are laryngeal mucus retention cysts found?
Supraglottis
What can cause a subglottic cyst?
ETT can obstruct a mucus gland
Consider if stridulous after short, non-traumatic intubation
What is seen on FFL in presbylaryngis?
VC bowing
Where do vocal fold granulomas form?
Medial arytenoid near the vocal process
Caused by vocal abuse
Where do vocal fold nodules form?
Anterior-middle junction of TVF
Bilateral by definition
What are the types of vocal fold polyps?
Mucoid
Angiomatous
What should be suspected if voice worse than FFL suggests in a vocal abuser?
Sulcus vocalis
What is the PPP rule?
In unilateral SLN injury, the Posterior commisure Points to the Paralyzed side
On laryngeal EMG, what indicates good potential for recovery?
Polyphasic potentials
On laryngeal EMG, what indicates poor potential for recovery?
Fibrillation potentials
What is seen on FFL with SLN paralysis?
Bowing deformity
Cricothyroid responsible for VF tension
What is seen on FFL with RLN paralysis?
Paramedian VF
What infectious processes can cause VF immobility?
Lyme disease Syphilis EBV TB Viral
How long does gelfoam last after injection medialization?
4-6w
Must do 30% overcorrection for saline resorption
How long does fat last after injection medialization?
6mo-1y
How long does collagen last after injection medialization?
4-9mo
How long does calcium hydroxyapatite (Radiesses voice) last after injection medialization?
Permanently
How long does Radiesses voice gel last after injection medialization?
1-2mo
Carrier only, no hydroxyapatite
How long does Hyaluronic acid last after injection medialization?
6mo
How long does micronized alloderm last after injection medialization?
6mo