Tonsillectomy

Template:Short description Template:Cs1 config Template:Use dmy dates Template:Infobox medical intervention Tonsillectomy is a surgical procedure in which both palatine tonsils are fully removed from the back of the throat.<ref name=Oto2019>Template:Cite journal</ref> The procedure is mainly performed for recurrent tonsillitis, throat infections and obstructive sleep apnea (OSA).<ref name=Oto2019/> For those with frequent throat infections, surgery results in 0.6 (95% confidence interval: 1.0 to 0.1) fewer sore throats in the following year, but there is no evidence of long term benefits.<ref name=Oto2019/><ref name=Burton2014>Template:Cite journal</ref> In children with OSA, it results in improved quality of life.<ref name=Ven2015>Template:Cite journal</ref>

While generally safe, complications may include bleeding, vomiting, dehydration, trouble eating, and trouble talking.<ref name=Oto2019/> Throat pain typically lasts about one to two weeks after surgery.<ref name=Oto2019/><ref>Template:Cite book</ref> Bleeding occurs in about 1% within the first day and another 2% after that.<ref name=Oto2019/> Between 1 in 2,360 and 1 in 56,000 procedures cause death.<ref name=Oto2019/> Tonsillectomy does not appear to affect long term immune function.<ref name=Oto2019/><ref name=Bit2015/>

Following the surgery, ibuprofen and paracetamol (acetaminophen) may be used to treat postoperative pain.<ref name=Oto2019/> The surgery is often done using metal instruments or electrocautery.<ref name=Oto2019/><ref name=Dam2016>Template:Cite journal</ref> The adenoid may also be removed or shaved down, in which case it is known as an "adenotonsillectomy".<ref name=Oto2019/> The partial removal of the tonsils is called a "tonsillotomy", which may be preferred in cases of OSA.<ref name=Oto2019/><ref>Template:Cite journal</ref><ref>Template:Cite journal</ref><ref name=Ste2014>Template:Cite journal</ref>

The surgery has been described since at least as early as 50 AD by Celsus.<ref>Template:Cite journal</ref> In the United States, as of 2010, tonsillectomy is performed less frequently than in the 1970s although it remains the second-most common outpatient surgical procedure in children.<ref name=Oto2019/> The typical cost when done as an inpatient in the United States is US$4,400 as of 2013.<ref>Template:Cite journal</ref> There is some controversy as of 2019 as to when the surgery should be used.<ref name=Oto2019/><ref name="Burton2014" /> There are variations in the rates of tonsillectomy between and within countries.<ref name=EU2019>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref><ref name=Sul2010 />

Medical uses

Tonsillectomy is mainly undertaken for sleep apnea and recurrent or chronic tonsillitis.<ref name=Oto2019/> It is also carried out for peritonsillar abscess, periodic fever, aphthous stomatitis, pharyngitis and adenitis (PFAPA), guttate psoriasis, nasal airway obstruction, tonsil cancer and diphtheria carrier state. For children, tonsillectomy is usually combined with the removal of the adenoid. However, it is unclear whether the removal of the adenoid has any additional positive or negative effects for the treatment of recurrent sore throat.<ref name="Burton2014" /> In cases of chronic tonsillitis in adults, there is strong evidence of increased quality of life, reduction of symptoms, and economic benefit.<ref>Template:Cite journal</ref><ref>Template:Cite journal</ref><ref>Template:Cite journal</ref> A randomised controlled trial of tonsillectomy versus medical treatment (antibiotics and pain killers) in adults with frequent tonsillitis found that tonsillectomy was more effective and cost effective. It resulted in fewer days with sore throat.<ref>Template:Cite journal</ref><ref>Template:Cite journal</ref>

Sore throat

Surgery is not recommended for those with fewer than seven documented throat infections in the last year, fewer than five each year for the last two years, or fewer than three each year for three years.<ref name=Oto2019/> Severely affected children who undergo surgery on average have one fewer sore throat per year in the subsequent one or two years, compared to those who do not.<ref name=Oto2019/><ref name=Burton2014/><ref name=Peds2017>Template:Cite journal</ref> Specifically one review of five randomized controlled trials, found a decrease from 3.6 to 3.0 episodes in the year following surgery.<ref name="Burton2014" /> In less severely affected children, surgery results in an increase, rather than a decrease of sore throats when the sore throat directly following surgery is included.<ref name="Burton2014" /> Surgery results in a reduction in school absence in the following year, but the strength of evidence is low.<ref name=Peds2017 /> Surgery does not result in an improvement in the quality of life.<ref name="Peds2017" /> Benefits of surgery do not persist over time.<ref name="Oto2019" /><ref name=Peds2017 /> Those with frequent throat infections often spontaneously improve over a year without surgery.<ref name=Oto2019/><ref name="Burton2014" /> Therefore, a certain number of people who undergo surgery will do so unnecessarily as they would not have had further episodes of tonsillitis had they not had surgery.<ref name="Burton2014" /> Evidence in adults is unclear.<ref name=Burton2014/>

In 2019, the American Academy of Otolaryngology & Head and Neck Surgery (AAO-HNS) recommended:

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{{#invoke:Check for unknown parameters|check|unknown=Template:Main other|preview=Page using Template:Blockquote with unknown parameter "_VALUE_"|ignoreblank=y| 1 | 2 | 3 | 4 | 5 | author | by | char | character | cite | class | content | multiline | personquoted | publication | quote | quotesource | quotetext | sign | source | style | text | title | ts }}Many cases of the sore throat have other causes than tonsillitis and tonsillectomy is therefore not indicated for those cases.<ref name="Burton2014" /><ref name="Peds2017" /> The diagnosis of tonsillitis is often made without testing for bacteria.<ref name="Peds2017" /> The UK National Health Service states that it is very rare that someone needs to have their tonsils taken out, and it is usually only necessary in case of severe tonsillitis that keeps recurring.<ref>{{#invoke:citation/CS1|citation

|CitationClass=web }}</ref>

Obstructive sleep apnea

Tonsillectomy improves obstructive sleep apnea (OSA) in most children.<ref name=Oto2019/> A 2015 Cochrane review found moderate quality evidence for benefits in terms of quality of life and symptoms but no benefit in attention or academic performance.<ref name=Ven2015/> It recommended that physicians and parents should weigh the benefits and risks of surgery as OSA symptoms may spontaneously resolve over time.<ref name=Ven2015/> An AHRQ review however did find improvements at school.<ref name=Oto2019/> The procedure is recommended for those who have OSA that has been verified by a sleep study.<ref name=Oto2019/> Studies have shown that treatment success of uvulopalatopharyngoplasty with tonsillectomy increases with tonsil size.<ref>Template:Cite journal</ref>

Other

There is no good evidence for other uses such as tonsil stones, bad breath, trouble swallowing, and an abnormal voice in children.<ref name=Oto2019/>

Complications

While generally safe, tonsillectomy may result in several complications, some of which are serious.<ref name="Oto2019" /><ref name=Burton2014/> Complications are divided into primary (first 24 hours after surgery), and secondary (after 24 hours), with bleeding being the most common complication. Other common complications are postoperative nausea and vomiting, dehydration, trouble eating, ear pain, taste dysfunction and trouble talking.<ref name="Oto2019" /><ref>Template:Cite journal</ref> In rare cases, tonsillectomy may also cause damage to the teeth (because of the clamp that is placed in the mouth during surgery), larynx and pharyngeal wall, aspiration, respiratory compromise, laryngospasm, laryngeal edema and cardiac arrest.<ref name=Oto2019/> Throat pain typically lasts about one to two weeks after surgery.<ref name=Oto2019/><ref name=Dam2016/>

Significant post-operative primary bleeding occurs in 0.2–2.2% of people, and secondary bleeding in 0.1–3.3%.<ref name=Oto2019/> In several reported case series, the rate of post tonsillectomy bleeding ranged from 2.0% to 7.0%.<ref>Template:Cite journal</ref><ref>Template:Cite journal</ref><ref name="Postoperative Bleeding and Associat">Template:Cite journal</ref> Also in veterinary surgery, bleeding was a common complication.<ref>Template:Cite journal</ref> A meta-analysis reported that frequency of bleeding after tonsillectomy across different techniques did not differ.<ref name="Postoperative Bleeding and Associat"/>

It is estimated 1.3% of people will have a delayed discharge (of 4 to 24 hours) due to a complication, and up to 3.9% will require repeat admission to hospital. The main reasons for either keeping a person in hospital, or readmitting them after tonsillectomy are uncontrolled pain, vomiting, fever, or bleeding. Death occurs as a result in between 1 in 2,360 and 56,000 procedures.<ref name=Oto2019/> Bleeding accounts for one-third of deaths.<ref name="Oto2019" /> As the procedure is done under general anesthesia, there are anesthesia risks.<ref name=Oto2019/>

Immune system

There is no evidence tonsillectomy affects long term immune function.<ref name="Oto2019" /><ref name=Bit2015>Template:Cite journal</ref> It does not appear to affect the long term risk of infections in other areas of the body.<ref>Template:Cite journal</ref> Some studies have found small changes in immunoglobulin concentrations after tonsillectomy but these are of unclear significance.<ref name="Oto2019" /> Tonsillectomy is a risk factor for Crohn's disease.<ref>Template:Cite journal</ref><ref name=":3" /> A 2024 meta-analysis found that tonsillectomy is associated with Crohn's disease and ulcerative colitis, with an odds ratio of 1.93 and 1.24, respectively.<ref name=":3">Template:Cite journal</ref> There is an association suggesting an increase in the risk of developing multiple sclerosis if done before the age of 20.<ref name=":1">Template:Cite journal</ref> A meta-analysis published in 2020 indicated a statistically significant association between a history of tonsillectomy and the development of Hodgkin's disease.<ref>Template:Cite journal</ref> A meta-analysis from 2022 concluded that a history of tonsillectomy is associated with an increased risk of breast cancer.<ref>Template:Cite journal</ref> The relationship between childhood tonsillectomy and the development of other cancer types in adulthood remains unclear.<ref>Template:Cite journal</ref>

Surgical procedure

File:Pair of Removed Tonsils.JPG

Cryptic tonsils immediately following surgical removal (bilateral tonsillectomy).

File:Tonsilectomia.JPG

Throat 1 day after a tonsillectomy.

File:Uvula without tonsils.jpg

Throat some days after a tonsillectomy.

For the past 50 years at least, tonsillectomy has been performed by dissecting the tonsil from its surrounding fascia, a so-called total, or extra-capsular tonsillectomy. Problems including pain and bleeding led to a recent resurgence in interest in sub-total tonsillectomy or tonsillotomy, which was popular 60 to 100 years ago, in an effort to reduce these complications.<ref name="intracapsular">Template:Cite journal</ref> The generally accepted procedure for 'total' tonsillectomy uses a scalpel and blunt dissection, electrocautery, or diathermy.<ref name=":7">Template:Cite journal</ref> Harmonic scalpels or lasers have also been used. Bleeding is stopped with electrocautery, ligation by sutures, and the topical use of thrombin, a protein that induces blood clotting. The most effective surgical approach has not been well studied.<ref name=":7" />

It is not known whether the benefits of subtotal tonsillectomy in obstructive sleep apnea are enduring. But this is also the case for tonsillectomy for sleep apnea. There have been no randomised controlled trials of long term effectiveness of tonsillectomy for sleep apnea.<ref name=Ven2015/>

Methods

The scalpel is the preferred surgical instrument of many ear, nose, and throat specialists. However, there are other techniques and a brief review of each follows:

• Dissection and snare method: Removal of the tonsils by use of a forceps and scissors with a wire loop called a snare was formerly the most common method practiced by otolaryngologists, but has been largely replaced in favor of other techniques.Template:Citation needed The procedure requires the patient to undergo general anesthesia; the tonsils are completely removed and the remaining tissue surface is cauterized. The patient will leave with minimal post-operative bleeding.
• Electrocautery: Electrocautery uses electrical energy to separate the tonsillar tissue and assists in reducing blood loss through cauterization. Research has shown that the heat of electrocautery (400 °C) may result in thermal injury to surrounding tissue. This may result in more discomfort during the postoperative period.
• Radiofrequency ablation: Monopolar radiofrequency thermal ablation transfers radiofrequency energy to the tonsil tissue through probes inserted in the tonsil. The procedure can be performed in an office (outpatient) setting under light sedation or local anesthesia. After the treatment is performed, scarring occurs within the tonsil causing it to decrease in size over a period of several weeks. The treatment can be performed several times. The advantages of this technique are minimal discomfort, ease of operations, and immediate return to work or school. Tonsillar tissue remains after the procedure but is less prominent. This procedure is recommended for treating enlarged tonsils and not chronic or recurrent tonsillitis.
• Coblation tonsillectomy: This surgical procedure is performed using plasma to remove the tonsils. Coblation technology combines radiofrequency energy and saline to create a plasma field. The plasma field is able to dissociate molecular bonds of target tissue while remaining relatively cool (40–70 °C),<ref>{{#invoke:citation/CS1|citation

|CitationClass=web }}</ref> which results in minimal or no damage to surrounding healthy tissue. A Coblation tonsillectomy is carried out in an operating room setting, with the patient under general anesthesia. Tonsillectomies are generally performed for two main reasons: tonsillar hypertrophy (enlarged tonsils) and recurrent tonsillitis. It has been claimed that this technique results in less pain, faster healing, and less post operative care.<ref>Template:Cite journal</ref> However, review of 21 studies gives conflicting results about levels of pain, and its comparative safety has yet to be confirmed.<ref>Template:Cite journal</ref> This technique has been criticized for a higher than expected rate of bleeding presumably due to the low temperature which may be insufficient to seal the divided blood vessels but several papers offer conflicting (some positive, some negative) results. More recent studies of coblation tonsillectomy indicate reduced pain and ostalgia;<ref>Template:Cite journal</ref> less intraoperative or postoperative complications;<ref>Template:Cite journal</ref> lesser incidence of delayed hemorrhage, more significantly in pediatric populations,<ref>Template:Cite journal</ref><ref>Template:Cite journal</ref><ref>Template:Cite journal</ref> less postoperative pain and early return to daily activities, fewer secondary infections of the tonsil bed and significantly lower rates of secondary hemorrhage.<ref>Template:Cite journal</ref> Unlike the electrosurgery procedure, Coblation Tonsillectomy generates significantly lower temperatures on contacted tissue.<ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref> Long-term studies seem to show that surgeons experienced with the technique have very few complications.

• Harmonic scalpel: This medical device uses ultrasonic vibrating of its blade at a frequency of 55 kHz. Invisible to the naked eye, the vibration transfers energy to the tissue, providing simultaneous cutting and coagulation. The temperature of the surrounding tissue reaches 80 °C. Proponents of this procedure assert that the result is precise cutting with minimal thermal damage.
• Thermal Welding: A new technology which uses pure thermal energy to seal and divide the tissue. The absence of thermal spread means that the temperature of surrounding tissue is only 2–3 °C higher than normal body temperature. Clinical papers show patients with minimal post-operative pain (no requirement for narcotic pain-killers), zero edema (swelling) plus almost no incidence of bleeding. Hospitals in the US are advertising this procedure as "Painless Tonsillectomy". Also known as Tissue Welding.
• Carbon dioxide laser: When a laser is used to perform tonsillectomy, it can be under local anaesthetic with anaesthetic spray only, called tonsillotomy (or tonsil resurfacing or partial tonsillectomy), or it can be performed under general anaesthetic when it is called intra-capsular tonsillectomy, using an operating microscope for magnification. The carbon dioxide laser in scanning mode is an excellent vapouriser of tissue, and in conjunction with a computerised pattern generator and operating microscope with micromanipulator, it can result in near total removal of tonsil tissue whilst preserving the capsule of the tonsil. This leads to a significantly reduced bleeding and pain rate.<ref>Template:Cite journal</ref> The local anaesthetic technique takes around 10 minutes, the general around 20 minutes depending on the size of the tonsils - the bigger they are, the longer it takes. The general anaesthetic operation has a revision rate of 1:50, the local anaesthetic tonsillotomy 1:4.5. This is different from procedures where a laser is used to reduce or resurface the tonsils (e.g. laser cryptolysis). Providing the absence of certain contra-indications such as sensitive gag reflex, LAST can be performed under local anesthetic as an outpatient procedure. A carbon dioxide laser is commonly used, and is swept over each tonsil 8–10 times. The smoke is aspirated out of the mouth to prevent smoke inhalation. Often, more than one procedure is required, each lasting about 20 minutes. Due to the frequent requirement for multiple sessions, this treatment may work out more expensive than a single session tonsillectomy. A degree of patient compliance is required, making it unsuitable for young children and anxious persons, who risk harm if they move during the procedure.<ref name="NICE LAST">{{#invoke:citation/CS1|citation

|CitationClass=web }}</ref>

• Microdebrider: The microdebrider is a powered rotary shaving device with continuous suction often used during sinus surgery. It is made up of a cannula or tube, connected to a hand piece, which in turn is connected to a motor with foot control and a suction device. The endoscopic microdebrider is used in performing a partial tonsillectomy, by partially shaving the tonsils. This procedure entails eliminating the obstructive portion of the tonsil while preserving the tonsillar capsule. A natural biologic dressing is left in place over the pharyngeal muscles, preventing injury, inflammation, and infection. The procedure results in less post-operative pain, a more rapid recovery, and perhaps fewer delayed complications. However, the partial tonsillectomy is suggested for enlarged tonsils—not those that incur repeated infections.Template:Citation needed

Medications

A single dose of the corticosteroid drug dexamethasone may be given during surgery to prevent post-operative vomiting.<ref name="Steward-CC">Template:Cite journal</ref> A dose of dexamethasone during surgery prevents vomiting in one out of every five children. A dose of dexamethasone may help children return to a normal diet more quickly and have less post-operative pain.<ref name="Steward-CC" /> Many people are prescribed antibiotics following a tonsillectomy, however, the benefits and potential harms have not been well studied.<ref name=":6">Template:Cite journal</ref> Antibiotics are not suggested to be used routinely following tonsillectomy.<ref name=":6" />

Post-surgery care

A sore throat will persist approximately two weeks following surgery while pain following the procedure is significant and may necessitate a hospital stay.<ref name=Gra2008>Template:Cite book</ref> Recovery can take from 7 to 10 days and proper hydration is very important during this time, since dehydration can increase throat pain, leading to a circle of poor fluid intake.<ref name="medical-surgical nursing">Template:Cite book</ref><ref>Template:Cite bookTemplate:Page needed</ref> Tonsillectomy appears to be more painful in adults than children.<ref>Template:Cite journal</ref> Controlling the pain following tonsillectomy is important to ensure that people can start eating again normally following the procedure.<ref>Template:Cite journal</ref>

At some point, most commonly 7 to 11 days after the surgery (but occasionally as long as two weeks after), bleeding can occur when scabs begin sloughing off from the surgical sites. The overall risk of bleeding is approximately 1–2%. It is higher in adults, especially males over age 70 and three-quarters of bleeding incidents occur on the same day as the surgery.<ref name="Windfuhr JP 2004">Template:Cite journal</ref> Approximately 3% of adults develop bleeding at this time which may sometimes require surgical intervention.

Recommendations for pain management include ibuprofen and paracetamol (acetaminophen).<ref name=Oto2019/> The opioid codeine is not recommended for those less than 12 years old.<ref name=Oto2019/> There is a theoretical concern that NonSteroidal Anti-Inflammatory Drugs (NSAIDs) may increase the risk of bleeding but evidence does not support such a risk.<ref>Template:Cite journal</ref> Further research is required to determine if mouth rinses, mouthwashes and sprays help improve recovery following surgery.<ref>Template:Cite journal</ref>

Some surgeons recommend starting with a soft diet for two weeks before advancing to normal diet. This is to prevent any sharp foods from potentially irritating the tonsillar fossae during the healing stage and provoking a bleed.

Rates

There are variations in tonsillectomy rates, both between and within countries.<ref name=EU2019 /><ref name=Sul2010 /> In 2015, tonsillectomy rates in the Netherlands, Belgium, Finland and Norway were at least twice those in the UK but rates in Spain, Italy and Poland were at least a quarter lower.<ref name=EU2019 /> Tonsillectomy rates even vary considerably between neighbouring countries. For example, rates in Croatia are three times those in Slovenia.<ref name=EU2019 /> Variations between countries may be explained by a lack of or differences between guidelines.<ref name=Ste2014 /> However differences in guidelines cannot explain the seven-fold variation between local authority areas within England.<ref name=Sul2010 />

In Germany tonsillectomy rates between regions differ by up to a factor of 8.<ref name=Ste2014 /> A 2010 study in England found the annual tonsillectomy rate per 100,000 between 2000 and 2005 was 754 in the highest region, the national average was 304 and the lowest region was 102.<ref name=Sul2010 /> This means there is a seven-fold difference between the region with the highest tonsillectomy rate and the region with the lowest one.<ref name=Sul2010>Template:Cite journal</ref> In 2006, English Chief Medical Officer Liam Donaldson revealed that unnecessary tonsillectomies and unnecessary hysterectomies combined cost the British National Health Service 21 million pounds a year.<ref>Template:Cite news</ref>

The rise in adenotonsillectomies for sleep apnea in the USA has been greater than the decline in tonsillectomies for sore throat.<ref name="pmid20974339">Template:Cite journal</ref>

Evidence-based indications

In 2018, a study of the medical records of 1.6 million UK children found 15,760 had sufficient sore throats to justify tonsillectomy and 13.6% (2,144) underwent surgery.<ref name="Šumilo_2018" /> The same study found 18,281 children who had undergone tonsillectomy, and of these only 11.7% (2,144) had evidence-based indications (i.e. frequent enough sore throats to justify surgery).<ref name="Šumilo_2018" /> The majority of tonsillectomies were undertaken for indications which did not have an evidence-base: five to six sore throats in one year (12.4%), two to four sore throats in one year (44.6%), sleep disordered breathing (12.3%), or obstructive sleep apnea (3.9%).<ref name="Šumilo_2018">Template:Cite journal</ref> In the UK therefore, most children who undergo tonsillectomy probably do not benefit and most children who might benefit do not undergo tonsillectomy.<ref name="Šumilo_2018" /> The study concluded that 32,500 (close to 90%) out of the 37,000 children who have their tonsils removed annually "are unlikely to benefit" and that surgery therefore may do more harm than good to those children.<ref name="Šumilo_2018" /> Tonsillectomy rates are lower in the UK than in most other western European countries.<ref name="EU2019" />

Table: Numbers of children (from 1.6 million children between 2005 and 2016 in the UK) identified with possible indications for tonsillectomy and the numbers who subsequently undergo tonsillectomy.

Condition which might be considered an indication for tonsillectomy	Number of children consulting with this indication	Proportion with this indication undergoing tonsillectomy	Proportion of all tonsillectomies attributable to this indication
Tonsillar tumour	5	0%	0.0%
Aphthous stomatitis, pharyngitis & cervical adenitis syndrome	435	3.4%	0.1%
Paradise criteria	15,320	13.9%	11.6%
Obstructive sleep apnea	3,185	22.2%	3.9%
Other sleep disordered breathing	15,205	14.8%	12.3%
Peritonsillar abscess	675	14.8%	0.5%
Recurrent sore throats / tonsillitis (episodes per year):
5 to 6	25,420	8.9%	12.4%
3 to 4	170,687	3.2%	30.1%
2 to 4 with guttate / chronic psoriasis	939	3.7%	0.2%
2 to 4 with glomerulonephritis	148	4.7%	0.0%
2	251,247	1%	14.3%
1	446,275	0.4%	9.9%
No indication identified	701,266	0.1%	4.7%
Total	1,630,807	1.1%	100.0%

Source: Šumilo et al. 2018<ref name="Šumilo_2018" />

Financial incentives

According to a study from 2009, surgery rates on average increase by 78% when surgeons are paid fee-for-service reimbursements instead of a fixed salary.<ref>Template:Cite journal</ref> Regarding tonsillectomy, a 1968 Canadian study pointed out that ENT specialists working on a fee-for-service programme were twice as likely to perform a tonsillectomy than those who were not.<ref>Template:Cite journal</ref><ref>Template:Cite journal</ref> In 2009 then US President Obama remarked:

Right now, doctors, a lot of times, are forced to make decisions based on the fee payment schedule that's out there. So if they're looking and – and you come in and you've got a bad sore throat, or your child has a bad sore throat, or has repeated sore throats, the doctor may look at the reimbursement system and say to himself, "You know what? I make a lot more money if I take this kid's tonsils out." Now, that may be the right thing to do. But I'd rather have that doctor making those decisions just based on whether you really need your kid's tonsils out or whether it might make more sense just to change – maybe they have allergies. Maybe they have something else that would make a difference.<ref>Template:Cite news</ref>{{#if:|{{#if:|}}

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History

File:BLW Tonsil Guillotine.jpg

Tonsil guillotine.

Tonsillectomies have been practiced for over 2,000 years, with varying popularity over the centuries.<ref name="McNeill1960">Template:Cite journal</ref> The earliest mention of the procedure is in "Hindu medicine" from about 1000 BCE. Roughly a millennium later, the Roman aristocrat Aulus Cornelius Celsus (25 BCE–50 CE) described a procedure whereby using the finger (or a blunt hook if necessary), the tonsil was separated from the neighboring tissue before being cut out.<ref name="McNeill1960" /> Galen (121–200 CE) was the first to advocate the use of the surgical instrument known as the snare, a practice that was to become common until Aetius (490 CE) recommended partial removal of the tonsil, writing "Those who extirpate the entire tonsil remove, at the same time, structures that are perfectly healthy, and, in this way, give rise to serious Hæmorrhage".<ref name="McNeill1960" /> In the 7th century Paulus Aegineta (625–690) described a detailed procedure for tonsillectomy, including dealing with the inevitable post-operative bleeding. 1,200 years pass before the procedure is described again with such precision and detail.<ref name="McNeill1960" />

The Middle Ages saw tonsillectomy fall into disfavor; Ambroise Pare (1509) wrote it to be "a bad operation" and suggested a procedure that involved gradual strangulation with a ligature. This method was not popular with the patients due to the immense pain it caused and the infection that usually followed. Scottish physician Peter Lowe in 1600 summarized the three methods in use at the time, including the snare, the ligature, and the excision.<ref name="McNeill1960" /> At the time, the function of the tonsils was thought to be absorption of secretions from the nose; it was assumed that removal of large amounts of tonsillar tissue would interfere with the ability to remove these secretions, causing them to accumulate in the larynx, resulting in hoarseness. For this reason, physicians like Dionis (1672) and Lorenz Heister censured the procedure.Template:Citation needed

In 1828, physician Philip Syng Physick modified an existing instrument originally designed by Benjamin Bell for removing the uvula; the instrument, known as the tonsil guillotine (and later as a tonsillotome), became the standard instrument for tonsil removal for over 80 years.<ref name="McNeill1960" /> By 1897, it became more common to perform complete rather than partial removal of the tonsil after American physician Ballenger noted that partial removal failed to completely alleviate symptoms in a majority of cases. His results using a technique involving removal of the tonsil with a scalpel and forceps were much better than partial removal; tonsillectomy using the guillotine eventually fell out of favor in America.<ref name="McNeill1960" />

In the beginning of the 20th century, tonsillectomy became more common in the United Kingdom and the United States and by the 1930s was very common in both countries.<ref name=":0">Template:Cite journal</ref> For example, a study conducted in 1934 found that 61% of 1,000 New York schoolchildren had been tonsillectomized; doctors recommended surgery for all but 65 of the remaining children.<ref name=":5">{{#invoke:citation/CS1|citation |CitationClass=web }}</ref> Complications were often simply accepted.<ref name=":0" /> The medical community considered enlarged tonsils a disease, attributing their enlargement to infection rather than a physiologic response.<ref name=":2">Template:Cite book</ref> Because of the theory of focal infection, many surgeons believed that not only enlarged tonsils, but all tonsils should be removed.<ref name=":2" /> In the 1940s tonsillectomy became controversial as several studies linked it to bulbar poliomyelitis.<ref name=":0" /> From the 1940s to 1970s, further studies found an association between tonsillectomy and bulbar poliomyelitis with recommendations not to do the operation during outbreaks.<ref>Template:Cite journal</ref><ref>Template:Cite news</ref><ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref><ref>Template:Cite journal</ref> Controversy surrounding tonsillectomy increased further in the United Kingdom in the 1960s because of the financial costs associated with the number of surgeries being performed and because of unexplainable variations in tonsillectomy rates between geographic regions and between social classes.<ref name=":0" /> In the media, tonsillectomy was criticised for being "fashionable" or a "status symbol".<ref name=":0" /> There was also an increasing concern regarding the psychological and physical suffering of young children as a result of surgery.<ref name=":2" /> Furthermore, opponents of surgery argued that the tonsils should be retained whenever possible because of their role in the immune system and that the benefits of surgery were marginal.<ref name=":2" /> In the 1970s, tonsillectomy rates in the United Kingdom started to decline after several studies concluded that tonsillectomy was not as effective for sore throats and many other indications as previously thought.<ref name=":0" />

Tonsillectomy rates in the United States have declined since 1978, when experts of the National Institutes of Health concluded that there was insufficient evidence that the benefits of tonsillectomy outweighed the risks and therefore recommended more research, which subsequently led to stricter guidelines.<ref name=":5" />

As doctors took a more conservative approach towards tonsillectomy, parental pressure became one of the most important reasons for surgery.<ref name=":2" />

Further reading

• Chow, Susie. "The Emergence, Decline and Persistence of Modern Medical Procedures: The Case of Tonsillectomy” (Ph.D.diss.(sociology), University of Pennsylvania; Proquest dissertations and theses., 1992 #9227640), the standard scholarly history.

• Grob, Gerald N. "The rise and decline of tonsillectomy in twentieth-century America." Journal of the history of medicine and allied sciences 62.4 (2007): 383-421. online

External links

• Tonsillectomy Procedures Template:Webarchive
• History of tonsillectomy
• Template:Cite journal