Adenoiditis overview: Difference between revisions
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==Overview== | ==Overview== | ||
[[Adenoid]] is a [[lymphoid tissue]] that | [[Adenoid]] is a [[lymphoid tissue]] that forms the [[Waldeyer's ring|Waldeyer]] ring which is located adjacent to the [[choanae]] and the [[pharyngeal]] [[ostium]] of the [[Eustachian tube|eustachian tubes]] in the posterior wall of [[nasopharynx]]. This [[lymphoid tissue]] is involved in [[immunoglobin]] production and maturation of [[Lymphatic|lymphatic cells]] and defense against [[pathogens]]. The [[adenoid]] usually undergoes a degree of [[atrophy]] and involution from the age of 8-10 years so it is rarely found in adults. [[Adenoiditis]] is the inflammation of [[Adenoid|adenoid tissue]]. [[Adenoid]] infection is mostly due to [[viral]] [[Infection|infections]]. Some [[bacterial]] [[pathogens]] including [[Haemophilus influenzae|H. influenzae]], [[Streptococcus|group A β-hemolytic streptococcus]], and [[Staphylococcus aureus|S. aureus]] ''can cause'' the disease as well. [[Adenoid|Adenoids]] can cause [[Sinusitis|recurrent sinusitis]] and [[Chronic otitis media|chronic persistent]] or [[Recurrent otitis media|recurrent otitis]] if left untreated and can lead to [[Adenoiditis|chronic adenoiditis]]. [[Medications]] ([[antibiotics]] or [[steroids]]) or [[surgical]] approach may be required for the management of [[adenoiditis]], depending on the causative agent. | ||
==Historical perspective== | ==Historical perspective== | ||
[[Adenoid]] was though to be a part of [[tonsils]] and responsible for the symptoms of [[Nasal congestion|nasal congestion and obstruction]]. As a result [[Tonsilectomy|adenotonsilectomy]] was performed for at least 2000 years. In the early beginning of 19th century, [[adenoid]] and [[tonsil]] tissue were known as remnants of an unknown [[infectious disease]], and so they were removed with adenotonsilectomy. Willhelm Meyer of Copenhagen, Denmark in 1800 firstly describe [[adenoiditis]] due to adenoid vegetations responsible for nasal symptoms and impaired hearing. He probably was the first one who performed an [[adenoidectomy]] separately. | [[Adenoid]] was though to be a part of [[tonsils]] and responsible for the symptoms of [[Nasal congestion|nasal congestion and obstruction]]. As a result [[Tonsilectomy|adenotonsilectomy]] was performed for at least 2000 years. In the early beginning of 19th century, [[adenoid]] and [[tonsil]] tissue were known as remnants of an unknown [[infectious disease]], and so they were removed with adenotonsilectomy. Willhelm Meyer of Copenhagen, Denmark in 1800 firstly describe [[adenoiditis]] due to adenoid vegetations responsible for nasal symptoms and impaired hearing. He probably was the first one who performed an [[adenoidectomy]] separately. | ||
Revision as of 13:15, 5 June 2017
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Adenoiditis Microchapters |
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Diagnosis |
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Treatment |
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Case Studies |
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]Associate Editor(s)-in-Chief: Mahshid Mir, M.D. [2]
Overview
Adenoid is a lymphoid tissue that forms the Waldeyer ring which is located adjacent to the choanae and the pharyngeal ostium of the eustachian tubes in the posterior wall of nasopharynx. This lymphoid tissue is involved in immunoglobin production and maturation of lymphatic cells and defense against pathogens. The adenoid usually undergoes a degree of atrophy and involution from the age of 8-10 years so it is rarely found in adults. Adenoiditis is the inflammation of adenoid tissue. Adenoid infection is mostly due to viral infections. Some bacterial pathogens including H. influenzae, group A β-hemolytic streptococcus, and S. aureus can cause the disease as well. Adenoids can cause recurrent sinusitis and chronic persistent or recurrent otitis if left untreated and can lead to chronic adenoiditis. Medications (antibiotics or steroids) or surgical approach may be required for the management of adenoiditis, depending on the causative agent.
Historical perspective
Adenoid was though to be a part of tonsils and responsible for the symptoms of nasal congestion and obstruction. As a result adenotonsilectomy was performed for at least 2000 years. In the early beginning of 19th century, adenoid and tonsil tissue were known as remnants of an unknown infectious disease, and so they were removed with adenotonsilectomy. Willhelm Meyer of Copenhagen, Denmark in 1800 firstly describe adenoiditis due to adenoid vegetations responsible for nasal symptoms and impaired hearing. He probably was the first one who performed an adenoidectomy separately.
Classification
Adenoiditis can be classified to the following types including acute adenoiditis, recurrent acute adenoiditis, and chronic/persistant adenoiditis.[1]
Pathophysiology
Adenoids are involved in the production of mostly secretory IgA, which is transported to the surface providing local immune protection. Studies suggest that a reduction in IgA will happen postoperative of adenoidectomy.[2]
Oral cavity normal flora bacteria are found in adenoid flora as well, which include:
- Alpha-hemolytic streptococci
- Enterococci
- Corynebacterium species
- Coagulase-negative staphylococci
- Neisseria species
- Haemophilus species
- Micrococcus species
- Stomatococcus species
Adenoiditis can happen as a result of infection and harbor pathogenic bacterial activity, which may lead to the development of disease of the ears, nose, and sinuses. Adenoiditis can progress to chronic disease if remain untreated for a long term.
Causes
Acute adenoiditis is mainly due to viral infection but bacterial infections can cause the disease as well, while bacterial infections have a more important role in recurrent and chronic adenoiditis. The most important viral causes include EBV, CMV, RSV. The most important bacterial causes include Haemophilus influenzae, group A β-hemolytic streptococcus, Staphylococcus aureus.[3]
Differentiating tonsillitis from other diseases
Diagnosis of adenoiditis can be challenging as majority of upper respiratory tract infections show the same pattern. The most important differential diagnosis include tonsilitis, viral upper respiratory tract infection, sinusitis and pharyngitis.
Epidemiology and Demographics
The prevalence of adenoiditis is not completely known. Research indicates that 15-30% of sore throats in children and 5-10% sore throats in adults are bacterial adenotonsillitis. The prevalence of adenoiditis decreases with age. Adenoid tissue go through atrophy process after 10 so adeoiditis is rarely seen after 15.[4][5][6][7][8]
Risk Factors
The most potent risk factor in the development of adenoiditis is being a young child. Other risk factors include immuno-deficiencies, living in an urban environment with more exposure to viruses or bacteria and usage of immuno-suppressant drugs.
Screening
There is insufficient evidence to recommend routine screening for Adenoiditis.
Natural history, complications and prognosis
Natural History
Acute adenoiditis will usually present with erythema and edema of the adenoids rapidly upon infiltration of the pathogen.[9]
- Symptoms, including fever and sore throat, will usually manifest within 24 hours of infection.
- It is usually combined with tonsilitis due to close anatomical location.
Complications
Complications of adenoiditis are caused by persistence and/or spread of the responsible pathogen - usually bacterial - and include speech abnormalities otitis media, acute sinusitis, pneumonia, adenoid hyperplasia, peritonsillar abscess, sleep apnea
Prognosis
The prognosis for acute adenoiditis without treatment is usually good; the disease is usually self-limited and will resolve itself within 3-4 days.[10]
Diagnosis
Diagnostic criteria
There are no criteria for the diagnosis of adenoiditis. However, seeing inflamed and hypertrophied adenoid tissue with flexible or rigid nasopharyngoscopy can be used as a criteria for adenoidectomy in patients suspected to chronic adenoiditis.
History and Symptoms
A positive history of fever and nasal obstruction and snoring are suggestive of adenoiditis. The most common symptoms of adenoiditis include nasal discharge which may be purulent, mouth breathing, nasal pain and sore throat.[11][12][13]
Physical Examination
Patients with adenoiditis are usually good-appearing. Physical examination of patients with adenoiditis is usually remarkable for fever, and purulent nasal discharges.[14][15][16]
Laboratory Findings
Laboratory findings consistent with the diagnosis of adenoiditis include neutrophilia, positive culture for organism during throat exam sampling, and positive blood culture for the organism in severe cases.[17]
Imaging Findings
On lateral neck x-ray, adenoiditis is characterized by enlargement of adenoids and narrowing of airways.
Adenoiditis diagnosis can be confirmed if during flexible or rigid nasopharyngoscopy inflamed adenoid tissue is seen. Flexible or rigid nasopharyngoscopy can provide a direct visualization of nasopharynx and Waldeyer ring so the inflamed adenoid tissue can be seen too.[18]
Treatment
Medical Therapy
The mainstay of therapy for adenoiditis is symptomatic therapy. Pharmacologic medical therapy is recommended among patients with recurrent and chronic adenoiditis. The best antibiotic therapy regimen include amoxicillin - clavulanic acid or a cephalosporin
Surgery
Surgery is not the first-line treatment option for patients with adenoiditis. Adenoidectomy is usually reserved for patients with chronic persistent adenoiditis whom developed adenoid hypertrophy. In case of adenoid hypertrophy, adenoidectomy may be performed to remove the adenoid. Adenoidectomy has been shown to be effective independent of the size of the adenoids.[19]
Prevention
Primary Prevention
Primary prevention strategies to prevent adenoiditis include hygienic practices.
Secondary Prevention
Secondary prevention involves usage of antibiotics to prevent recurrence of adenoiditis. It can be helpful in certain circumstances:[20]
- History of rheumatic fever, to prevent pharyngitis cause by group A beta-hemolytic streptococci.
Related Chapters
References
- ↑ "Head & Neck Surgery--otolaryngology - Google Books".
- ↑ Havas T, Lowinger D (2002). "Obstructive adenoid tissue: an indication for powered-shaver adenoidectomy". Arch. Otolaryngol. Head Neck Surg. 128 (7): 789–91. PMID 12117336.
- ↑ Havas T, Lowinger D (2002). "Obstructive adenoid tissue: an indication for powered-shaver adenoidectomy". Arch. Otolaryngol. Head Neck Surg. 128 (7): 789–91. PMID 12117336.
- ↑ Komaroff AL, Pass TM, Aronson MD, Ervin CT, Cretin S, Winickoff RN, Branch WT (1986). "The prediction of streptococcal pharyngitis in adults". J Gen Intern Med. 1 (1): 1–7. PMID 3534166.
- ↑ Kaplan EL, Top FH, Dudding BA, Wannamaker LW (1971). "Diagnosis of streptococcal pharyngitis: differentiation of active infection from the carrier state in the symptomatic child". J. Infect. Dis. 123 (5): 490–501. PMID 5115179.
- ↑ Schroeder BM (2003). "Diagnosis and management of group A streptococcal pharyngitis". Am Fam Physician. 67 (4): 880, 883–4. PMID 12613739.
- ↑ Sharav, Yair; Benoliel, Rafael (2008). Orofacial Pain and Headache. Elsevier. ISBN 0723434123.
- ↑ Pagella F, De Amici M, Pusateri A, Tinelli G, Matti E, Benazzo M, Licari A, Nigrisoli S, Quaglini S, Ciprandi G, Marseglia GL (2015). "Adenoids and clinical symptoms: Epidemiology of a cohort of 795 pediatric patients". Int. J. Pediatr. Otorhinolaryngol. 79 (12): 2137–41. doi:10.1016/j.ijporl.2015.09.035. PMID 26478108.
- ↑ "Tonsillitis - NHS Choices".
- ↑ "Tonsillitis - NHS Choices".
- ↑ Kosikowska U, Korona-Głowniak I, Niedzielski A, Malm A (2015). "Nasopharyngeal and Adenoid Colonization by Haemophilus influenzae and Haemophilus parainfluenzae in Children Undergoing Adenoidectomy and the Ability of Bacterial Isolates to Biofilm Production". Medicine (Baltimore). 94 (18): e799. doi:10.1097/MD.0000000000000799. PMC 4602522. PMID 25950686.
- ↑ Kajan ZD, Sigaroudi AK, Mohebbi M (2016). "Prevalence and patterns of palatine and adenoid tonsilloliths in cone-beam computed tomography images of an Iranian population". Dent Res J (Isfahan). 13 (4): 315–21. PMC 4993058. PMID 27605988.
- ↑ Galli J, Calò L, Ardito F, Imperiali M, Bassotti E, Fadda G, Paludetti G (2007). "Biofilm formation by Haemophilus influenzae isolated from adeno-tonsil tissue samples, and its role in recurrent adenotonsillitis". Acta Otorhinolaryngol Ital. 27 (3): 134–8. PMC 2640046. PMID 17883191.
- ↑ Kosikowska U, Korona-Głowniak I, Niedzielski A, Malm A (2015). "Nasopharyngeal and Adenoid Colonization by Haemophilus influenzae and Haemophilus parainfluenzae in Children Undergoing Adenoidectomy and the Ability of Bacterial Isolates to Biofilm Production". Medicine (Baltimore). 94 (18): e799. doi:10.1097/MD.0000000000000799. PMC 4602522. PMID 25950686.
- ↑ Kajan ZD, Sigaroudi AK, Mohebbi M (2016). "Prevalence and patterns of palatine and adenoid tonsilloliths in cone-beam computed tomography images of an Iranian population". Dent Res J (Isfahan). 13 (4): 315–21. PMC 4993058. PMID 27605988.
- ↑ Galli J, Calò L, Ardito F, Imperiali M, Bassotti E, Fadda G, Paludetti G (2007). "Biofilm formation by Haemophilus influenzae isolated from adeno-tonsil tissue samples, and its role in recurrent adenotonsillitis". Acta Otorhinolaryngol Ital. 27 (3): 134–8. PMC 2640046. PMID 17883191.
- ↑ Galli J, Calò L, Ardito F, Imperiali M, Bassotti E, Fadda G, Paludetti G (2007). "Biofilm formation by Haemophilus influenzae isolated from adeno-tonsil tissue samples, and its role in recurrent adenotonsillitis". Acta Otorhinolaryngol Ital. 27 (3): 134–8. PMC 2640046. PMID 17883191.
- ↑ Ramji M, Biron VL, Jeffery CC, Côté DW, El-Hakim H (2014). "Validation of pharyngeal findings on sleep nasopharyngoscopy in children with snoring/sleep disordered breathing". J Otolaryngol Head Neck Surg. 43: 13. doi:10.1186/1916-0216-43-13. PMC 4092353. PMID 24919758.
- ↑ El-Badrawy A, Abdel-Aziz M (2009). "Transoral endoscopic adenoidectomy". Int J Otolaryngol. 2009: 949315. doi:10.1155/2009/949315. PMC 2809357. PMID 20111586.
- ↑ Dagnelie CF, Bartelink ML, van der Graaf Y, Goessens W, de Melker RA (1998). "Towards a better diagnosis of throat infections (with group A beta-haemolytic streptococcus) in general practice". Br J Gen Pract. 48 (427): 959–62. PMC 1409991. PMID 9624764.
adenoids can contribute to recurrent sinusitis and chronic persistent or recurrent ear disease because they can harbor a chronic infection.adenoids can contribute to recurrent sinusitis and chronic persistent or recurrent ear disease because they can harbor a chronic infection.