Adenoid

Template:Infobox Anatomy

WikiDoc Resources for Adenoid

Articles

Most recent articles on Adenoid

Most cited articles on Adenoid

Review articles on Adenoid

Articles on Adenoid in N Eng J Med, Lancet, BMJ

Media

Powerpoint slides on Adenoid

Images of Adenoid

Photos of Adenoid

Podcasts & MP3s on Adenoid

Videos on Adenoid

Evidence Based Medicine

Cochrane Collaboration on Adenoid

Bandolier on Adenoid

TRIP on Adenoid

Clinical Trials

Ongoing Trials on Adenoid at Clinical Trials.gov

Trial results on Adenoid

Clinical Trials on Adenoid at Google

Guidelines / Policies / Govt

US National Guidelines Clearinghouse on Adenoid

NICE Guidance on Adenoid

NHS PRODIGY Guidance

FDA on Adenoid

CDC on Adenoid

Books

Books on Adenoid

News

Adenoid in the news

Be alerted to news on Adenoid

News trends on Adenoid

Commentary

Blogs on Adenoid

Definitions

Definitions of Adenoid

Patient Resources / Community

Patient resources on Adenoid

Discussion groups on Adenoid

Patient Handouts on Adenoid

Directions to Hospitals Treating Adenoid

Risk calculators and risk factors for Adenoid

Healthcare Provider Resources

Symptoms of Adenoid

Causes & Risk Factors for Adenoid

Diagnostic studies for Adenoid

Treatment of Adenoid

Continuing Medical Education (CME)

CME Programs on Adenoid

International

Adenoid en Espanol

Adenoid en Francais

Business

Adenoid in the Marketplace

Patents on Adenoid

Experimental / Informatics

List of terms related to Adenoid

## Contents

* 1 Overview
* 2 Function
* 3 Pathology
* 4 Removal of the adenoids
* 5 Histology
* 6 See also
* 7 References
* 8 External links

## Overview

[edit | edit source]

Adenoids (or pharyngeal tonsils, or nasopharyngeal tonsils) are a mass of lymphoid tissue situated at the very back of the nose, in the roof of the nasopharynx, where the nose blends into the mouth.

Normally, in children, they make a soft mound in the roof and posterior wall of the nasopharynx, just above and behind the uvula.

## Function

[edit | edit source]

Adenoids are part of the immune system. Like all lymphoid tissue, they trap infectious agents like viruses and bacteria, and they produce antibodies.

Since the adenoids are located at the back of the nasal airway, they provide defense against inhaled substances.

This function decreases with age as the adenoids shrink. Because adenoids do ordinarily shrink by late childhood, the problems caused by enlarged adenoids rarely occur in adults.

## Pathology

[edit | edit source]

Enlarged adenoids, or adenoid hypertrophy, can become nearly the size of a ping pong ball and completely block airflow through the nasal passages.

Even if enlarged adenoids are not substantial enough to physically block the back of the nose, they can obstruct airflow enough so that breathing through the nose requires an uncomfortable amount of work, and inhalation occurs instead through an open mouth.

Adenoids can also obstruct the nasal airway enough to affect the voice without actually stopping nasal airflow altogether.

## Removal of the adenoids

[edit | edit source]

Surgical removal of the adenoids is a procedure called adenoidectomy.

Carried out through the mouth under a general anaesthetic (or less commonly a  topical), adenoidectomy involves the adenoids being curetted, cauterised, lasered, or otherwise ablated.

## Histology

[edit | edit source]

Adenoids, unlike other types of tonsils, have pseudostratified columnar epithelium.[1]

They also differ from the other tonsil types by lacking crypts. The adenoids are often removed along with the tonsils. This can cause a very sore throat for about a week and rather unpleasant breath. Most people's adenoids are not even in use after a person's third year, but if they cause problems they must be taken out or they may otherwise shrink.

## See also

[edit | edit source]

* adenoidectomy
* lymphatic system
* pharynx
* tonsil

## References

[edit | edit source]

1. ↑ Histology at KUMC lymphoid-lymph06

## External links

[edit | edit source]

* Template:RocheLexicon
* Histology at usuhs.mil
* Histology at udel.edu
* /drtbalu otolaryngology online

Template:Lymphatics of head and neck

Template:WS