Thursday, June 27, 2013

6/27/2013

Answers:
Indications for total larygnectomy for laryngeal cancer include all of the following except:
A) All T4 tumors 
B) Tongue base involved past circumvallate 
C) Cricoid cartilage involved 
D) as salvage therapy after prior failed treatment 
E) direct invasion fo surrounding neck tissue


When should a patient with laryngeal cancer and without clinically apparent nodal mets undergo a neck dissection?

When the risk of nodal mets is greater than 15%. This includes all supraglottic and T3 or higher glottic cancers.

MC Question:
Which of the following is not a presenting symptom of laryngeal cancer?
A) Hemoptysis 
B) Ear pain 
C) Dysphagia 
D) Odynophagia 
E) Neck mass
F) All of the above

Free Response Questions:
With regards to laryngeal cancer, a "breathy" voice indicates----whereas a "muffled" voice indicates----?


Quick Facts:
-All intrinsic muscles of larynx are innervated by recurrent laryngeal nerve except cricothyroid (ext. sup. laryngeal).
-Sole abductor of vocal cords is posterior cricoarytenoid.
-Path of Vagus:
-nuclei in upper medulla give rise to rootlets.
-motor fibers come from nucleus ambiguus and join at cervical ganglion below jugular foramen.
-vagus exits jugular foramen w/ CNIX and XII. It descends in carotid sheath.
-R RLN curls under subclavian artery and runs superiorly to tracheoesophageal groove, passes into larynx under inf. constrictor.
-L RLN leaves vagus at arch, loops under ligamentum arteriosum before entering groove.

No comments:

Post a Comment