1. Tonsillectomy, and Adenoidectomy Tonsillectomy, and Adenoidectomy Babak Saedi Assistant professor of tehran university

2. Introduction  1994 140,000 U.S. children under the age of 15 had adenoidectomies and 286,000 had adenotonsillectomies  This is down from a peak of over 1 million in the 1970’s  These are the most common major surgical procedures in children.

3. History  Celsus first described tonsillectomy in 30 A.D.  Paul of Aegina wrote his description in 625 A.D.  1867 Wilhelm Meyer reports removal of “adenoid vegetations” through the nose with a ring knife.  1917 Samuel J. Crowe published his report on 1000 tonsillectomies, used Crowe-Davis mouth gag  Part of Waldeyer’s ring after the German anatomist who described them

4. History  Celsus 50 A.D.  Caque of Rheims  Philip Syng  Wilhelm Meyer 1867  Samuel Crowe

5. Anatomy Tonsils  Plica triangularis  Gerlach’s tonsilAdenoids  Fossa of Rosenmüller  Passavant’s ridge

7. Blood Supply Tonsils  Ascending and descending palatine arteries  Tonsillar artery  1% aberrant ICA just deep to superior constrictorAdenoids  Ascending pharyngeal, sphenopalatine arteries

8. Histology Tonsils  Specialized squamous  Extrafollicular  Mantle zone  Germinal centerAdenoids  Ciliated pseudostratified columnar  Stratified squamous  Transitional

9. Common Diseases of the Tonsils and Adenoids  Acute adenoiditis/tonsillitis  Recurrent/chronic adenoiditis/tonsillitis  Obstructive hyperplasia  Malignancy

10. Acute Adenotonsillitis Etiology  5-30% bacterial; of these 39% are beta-lactamase- producing (BLPO)  Anaerobic BLPO GABHS most important pathogen because of potential sequelae  Throat culture  Treatment

12. Microbiology of Adenotonsillitis Most common organisms cultured from patients with chronic tonsillar disease (recurrent/chronic infection, hyperplasia):  Streptococcus pyogenes (Group A beta-hemolytic streptococcus)  H.influenza  S. aureus  Streptococcus pneumoniae Tonsil weight is directly proportional to bacterial load.

13. Acute Adenotonsillitis Differential diagnosis Infectious mononucleosis Malignancy: lymphoma, leukemia, carcinoma Diptheria Scarlet fever Agranulocytosis

14. Obstructive Hyperplasia  Adenotonsillar hypertrophy most common cause of SDB in children  Diagnosis  Indications for polysomnography  Interpretation of polysomnography  Perioperative considerations

15. Peritonsillar Abscess

17. Pleomorphic Adenoma

18. Other Tonsillar Pathology  Hyperkeratosis, mycosis leptothrica  Tonsilloliths

19. Candidiasis

20. Syphilis

21. Retention Cysts

22. Supratonsillar Cleft

23. Indications for Tonsillectomy AAO-HNS:  3 or more episodes/year  Hypertrophy causing malocclusion, UAO  PTA unresponsive to nonsurgical mgmt  Halitosis, not responsive to medical therapy  UTE, suspicious for malignancy  Individual considerations

24. Indications for Adenoidectomy Obstruction:  Chronic nasal obstruction or obligate mouth breathing  OSA with FTT, cor pulmonale  Dysphagia  Speech problems  Severe orofacial/dental abnormalities Infection:  Recurrent/chronic adenoiditis (3 or more episodes/year)  Recurrent/chronic OME (+/- previous BMT)

25. PreOp Evaluation of Adenoid Disease  Triad of hyponasality, snoring, and mouth breathing  Rhinorrhea, nocturnal cough, post nasal drip  “Adenoid facies”  “Milkman” & “Micky Mouse”  Overbite, long face, crowded incisors

26. PreOp Evaluation of Adenoid Disease Differential diagnoses  Allergic rhinitis  Sinusitis  GERD  For concomitant sinus disease, treat adenoids first

27. PreOp Evaluation of Adenoid Disease Evaluate palate  Symptoms/FH of CP or VPI  Midline diastasis of muscles, bifid uvula  CNS or neuromuscular disease  Preexisting speech disorder?

28. PreOp Evaluation of Adenoid Disease Lateral neck films are useful only when history and physical exam are not in agreement. Accuracy of lateral neck films is dependent on proper positioning and patient cooperation.

29. PreOp Evaluation of Adenoid Disease

30. PreOp Evaluation of Tonsillar Disease TONSIL SIZE  0in fossa  +1<25% occupation of oropharynx  +225-50%  +350-75%  +4>75% Avoid gagging the patient

32. Questions?