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D. D. Keskin et al.
Tonsillectomy has been proposed as a treatment for PANDAS, but the evidence is limited, and the condition is poorly understood. A recent comprehensive study showed no recommendations for or against tonsillectomy as a treatment for PANDAS [30, 31].
38.6.2.5 Periodic Fever, Aphthous Stomatitis, Pharyngitis,
andAdenopathy Syndrome (PFAPA)
PFAPA syndrome (periodic fever, aphthous stomatitis, pharyngitis, and cervical adenitis) is a recurrent febrile condition primarily affecting children aged 2–6, with a minor male predisposition. The sudden onset of fever, pharyngitis, tender cervical lymphadenopathy, or aphthous ulcers characterizes it [13, 32, 33]. Clinical criteria are used to make a diagnosis. Despite research that shows a hereditary origin, the genetic origins, and etiology of PFAPA syndrome remain unknown. The corner­stone of treatment is corticosteroids. However, tonsillectomy has also been shown to induce remission and/or minimize the severity of episodes [32, 33]. Although there have been isolated reports of sporadic cases in adults, they become less com­mon after age 10 [13].
38.6.2.6 Palmoplantar Pustulosis (PPP)
Palmoplantar pustulosis (PPP) is dened by the recurrence of sterile pustules on the palms and soles, accompanied by scaly and erythematous skin that might ssure [34, 35]. PPP patients have an intraepidermal aggregation of neutrophils in the upper dermis and a mixed perivascular, diffuse inltrate with inammatory cells. Molecular investigations of PPP reveal that CD4-positive T cells in the tonsils and peripheral blood detect streptococcal antigens and exhibit increased levels of immu­nological markers such as beta-1integrin and CCR6in PPP patients. Immune com­plexes, antikeratin antibodies, and inammatory cytokines (IL-6, IFN-, and TNF-) were found to be elevated in PPP patients, and changes in these levels following tonsillectomy were found to be closely connected with the prevalence of skin lesions [34, 36]. As a result, tonsillectomy appears to decrease the number of autoreactive cells. Tonsillectomy has effectively improved PPP skin lesions in several studies [3436].
38.6.2.7 IgA Nephropathy
The most frequent type of glomerulonephritis in the world is IgA nephropathy. Progress takes 10–20years and can lead to end-stage renal failure. It is caused by immunoglobulin A (IgA) protein deposits inside the kidney’s lters (glomeruli) [36,
37]. Upper respiratory infections, such as tonsillitis, frequently manifest with mac-
roscopic hematuria in IgAN patients. There is a link between tonsillar immunity and pathophysiology, according to clinical data. Tonsillar immunity is a type of mucosal immunity in which antigen-presenting cells, such as macrophages, form the starting point for B cells and plasma cells to make antibodies, including IgA, when exposed to pathogens (e.g., bacteria and their constituents) [38]. Hotta etal. were the rst to propose that for IgAN patients, a tonsillectomy combined with steroid pulse therapy will reduce hematuria/proteinuria and increase remission rates [3639].
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38.7 Clinical Manifestation

The most prevalent upper respiratory tract disorders are recurrent acute tonsillitis (RT) and obstructive diseases induced by tonsillar hyperplasia (TH). Although the severity of frailty varies, many patients suffer from chronic and recurrent medical conditions that have an impact on their physical and mental health, as well as their educational performance and healthcare costs [40].
38.7.1 Infection
Acute tonsillitis is a clinical diagnosis. It can be challenging to distinguish between bacterial and viral causes, but it is necessary to avoid antibiotic overuse. To differen­tiate between viral and bacterial tonsillitis, data such as the patient’s history, clinical symptoms, and laboratory data are required [17, 41]. In 70–95% of patients, viral infection causes acute tonsillitis [41]. Epstein-Barr virus (EBV), rhinovirus, entero­virus, inuenza, and adenovirus are viral infections that frequently cause acute ton­sillitis [1, 13]. The most prevalent bacterial etiology is Group A beta-hemolytic streptococcus (GABHS) [1, 4, 13, 17]. Different pathogen spectrums are detected depending on age [17, 41]. Streptococcal pharyngitis affects people of all ages, though it is most frequent in children and teenagers—the infection peaks between the ages of 3 and 14. Although the disease is more common in the winter and early spring, it can strike any time of year. The incubation period is between 2 and 5days [41]. Both aerobic and anaerobic microorganisms can cause bacterial tonsillitis.
Histologically, a necrotic crypt epithelium, leukocytes within the crypts (empy­ema), and numerous bacterial colonies are all signs of acute bacterial tonsillitis. Chronic inammation, on the other hand, is dened by larger and activated germinal centers, as well as a signicant rise in IgG production. Crypts are dilated and fre­quently include debris, bacteria, and calcication (tonsillithiasis).
38.7.2 Obstruction
In the pediatric population, obstructive sleep apnea is the most common reason for tonsillectomy [1]. Sleep apnea syndrome (SAS) is a common disorder characterized by snoring and partial or intermittent obstruction of the upper airway during sleep. It is estimated to occur in 1–3% of children with a peak age of 2–5years. Common symptoms include chronic snoring, difculty breathing during sleep, restlessness, and witnessed apnea. The most prevalent related condition in otherwise healthy children is adenotonsillar hypertrophy, but cranial-facial deformities, neuromuscu­lar disorders, and obesity are risk factors. Excessive daytime sleepiness, growth failure, school failure, behavioral issues, cor pulmonale, and even death can be sig­nicant neurobehavioral and cardiorespiratory consequences of severe OSAS.Diagnosis is based on data from the history, physical exam, and laboratory studies that conrm the presence and severity of the upper airway obstruction.
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The diagnostic tool of choice has been polysomnography. The severity of the symptoms, as well as the underlying anatomic and physiologic abnormalities, deter­mine treatment options. Because adenotonsillar hypertrophy is generally present in children with OSAS, most cases can be treated surgically [1, 4245].
Snoring should be monitored in all children and adolescents. If polysomnogra­phy is unavailable, alternative diagnostic testing or referral to a specialist for a com­plete assessment should be considered in children/adolescents with snoring and symptoms/signs of OSAS.Patients with adenotonsillar hypertrophy should receive adenotonsillectomy as a rst-line treatment. If adenotonsillectomy is not performed or if OSAS persists after surgery, continuous positive airway pressure is indicated as a therapy. In patients who are overweight or obese, weight loss is shown in addi­tion to other treatments. Intranasal corticosteroids are an option for children with minor OSAS who are not candidates for adenotonsillectomy or who have minor OSAS after surgery [45].
D. D. Keskin et al.
38.7.3 Neoplasia
Tumors in the oropharynx are most commonly found in the anterior tonsillar pillar and the tonsil. Lesions on the anterior tonsillar most widely manifest as regions of leukoplakia or erythroplakia and are often asymptomatic. Exophytic or ulcerative lesions, predominantly in the tonsillar fossa, are more common. Tonsil lesions are at a signicant risk of spreading to regional lymph nodes due to lymphatic drainage. They may also be the unobvious primary site when carcinoma appears in the lymph nodes with no known place of origin in the pharynx. Lymphoma, Hodgkin’s dis­ease, and tonsil cancer have been the most prevalent lesions [19]. Asymmetric tonsil enlargement is uncommon and may indicate the necessity for tonsillectomy to con­rm the diagnosis [1, 4, 15, 19]. Patients with concomitant symptoms suggestive of a malignant process, such as adenopathy over 3cm, dysphagia, night sweats, and fevers, may consider tonsillectomy for tonsil asymmetry [46].

38.8 Diagnosis

38.8.1 Symptoms andSigns
The most prevalent upper respiratory tract disorders are recurrent acute tonsillitis (RT) and obstructive infections caused by tonsillar hyperplasia (TH) [40]. Children who have tonsillar diseases present variably. Fever, tonsillar exudates, sore throat, odynophagia, halitosis, and sensitive anterior cervical chain lymphadenopathy are common symptoms of infection [1, 13, 25, 47]. Patients may also have dysphagia secondary to tonsillar swelling. A complete history and physical exam should be performed rst, and the results can be used to calculate a Centor Score or McIsaac score (modied Centor score) [17, 48]. According to national and international guidelines, the McIsaac Score for clinical assessment of the possibility of GABHS
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tonsillitis is still recommended as the preferred clinical screening technique. According to McIsaac, the modied Centor score is correct for age and may thus be utilized in both adults and children [17, 48]. Both methods were created to deter­mine the likelihood that streptococcal bacteria and guiding treatment cause pharyn­gitis. A rapid test or culture should only be considered if the patient scores 3 or above (Centor or McIsaac). This is not recommended for people with a score of 2 or less unless they have a persistent illness or a unilateral nding [17, 48].
38.8.2 Physical Examination
There have been no standard recommendations for the clinical assessment of the tonsils. To prevent gagging, a tongue depressor is softly placed on the anterior two­thirds of the tongue in front of the circumvallate papillae [4]. The palatine tonsils can often be seen in a pediatric child by steadily depressing the posterior oral tongue using a tongue depressor. Conversely, involution may make the palatine tonsil less visible in the adult patient [4, 13].
Brodsky and colleagues developed a tonsillar hypertrophy assessment scale [4].
38.8.3 Laboratory
Acute tonsillitis is a clinical diagnosis. Acute tonsillitis will be diagnosed clinically. To distinguish between viral and bacterial tonsillitis, information such as the patient’s history, clinical symptoms, and test data are required [17].
GABHS can be detected using throat culture alone or with rapid antigen testing. It is vital to remember that while rapid antigen testing is specic (88–100%), it is not sensitive (61–95%); false negatives are possible. Clinicians should consider acquiring pharyngeal swabs for gonorrhea, chlamydia, and HIV in the appropriate clinical situation. When the Ebstein-Barr virus is suspected, a mononucleosis spot test may be considered [25].
The sampling technique is essential for the diagnostic quality of the pharyngeal swab [49]. The tongue should be forced down, and the swab should be wiped across both tonsils and the posterior pharyngeal wall in a rotating motion. The intraoral mucosa and saliva should not be touched [49]. If the rapid test ndings are negative and there is a strong suspicion of bacterial pharyngeal infection, a microbiological culture should be used to identify the bacteria [17, 48, 49]. Mostly, microbiological culture is less expensive than rapid test procedures. However, one disadvantage of culturing is the time required until the test result is available [17]. Multiplex PCR can offer molecular genetic conrmation of viral (tonsillitis) infections. Rapid tests or multiplex PCR for virus identication are nearly always unimportant in the clini­cal routine for different viruses (e.g., adenoviruses) due to the lack of therapeutic signicance [25].
The human antibody production against such streptococcal antigens is measured by antistreptolysin O titer (ASLO titer) values. An acute b-hemolytic streptococcal
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infection could trigger the development of antibodies. The ASLO titer and all other currently known human antibody titers against b-hemolytic streptococci (e.g., anti­hyaluronidase, and anti-DNase B) do not provide valid diagnostic criteria for the diagnostics. An increased antibody response to streptococci (e.g., an increased ASL titer) does not indicate protection from acute streptococcal infections, nor does it imply an increased risk of acute streptococcal disease, nor does it indicate an increased risk of purulent or immunogenic streptococcal secondary illness [17, 50].
38.8.4 Imagining
A lateral neck lm can occasionally help identify the tonsils’ inferior extension; however, this modality cannot precisely evaluate the tonsils’ relative airway size [4, 51].
A more thorough examination may be required in complicated infections, such as those involving patients with unstable vital signs, toxic appearance, difculties swallowing, inability to accept oral intake, or trismus. CT imaging of the neck with intravenous contrast can rule out dangerous conditions such as abscess, Lemierre disease, and epiglottitis [25]. Imaging with head and neck magnetic resonance imaging (MRI) or computed tomography (CT) is appropriate if abscessing is sus­pected beyond the peritonsillar region. A CT scan can conrm the diagnosis of peritonsillar abscess with a sensitivity of up to 100% and a specicity of up to 75%, and it can also identify additional abscessing and is nearly always available and cost-effective. Because MRI enables higher soft tissue resolution and visualization of vessels without exposing patients to radiation, it is highly suggested for children [17, 51].
38.8.5 Polysomnography
According to the American Academy of Pediatrics, the gold standard tool for diag­nosing OSAS in children is overnight, attended, in-laboratory polysomnography [45, 52]. Video recording, electro-encephalogram; electrooculogram, submental and leg electromyogram, oronasal airow; abdominal and chest wall movements; pulse oximetry, and end-tidal or transcutaneous partial pressure of carbon dioxide (PCO2) should all be recorded during polysomnography (PSG) [1, 4, 45, 51, 52]. Despite its high cost and scheduling challenges, PSG is still the gold standard for objectively correlating ventilatory problems with sleep-disordered breathing (SBD). Other evaluation procedures, such as audiotaping, videotaping, and home PSG, have generated promising ndings but need more research [46]. Abbreviated PSG (i.e., nocturnal oximetry or nap PSG) has been demonstrated to have a high positive predictive value and a low negative predictive value, indicating that patients with negative results may require further testing [46]. When polysomnography is unavail­able, nocturnal pulse oximetry is a low-cost, easy-to-use diagnostic method for detecting OSAS in children with SDB symptoms. Oximetry results can facilitate
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treatment decisions and help predict immediate major respiratory complications postadenotonsillectomy [52].
PSG avoids unnecessary or ineffective surgery in children with primarily nonob­structive events or central apnea [43]. Before performing tonsillectomy, the clini­cian should refer children with sleep-disordered breathing (SDB) for PSG if they exhibit any of the following: obesity, Down syndrome, craniofacial abnormalities, neuromuscular disorders, sickle cell disease, or mucopolysaccharidoses [43]. When the need for surgery is uncertain or when there is a discrepancy between tonsillar size on physical examination and the reported severity of SDB, the doctor should advocate for PSG before tonsillectomy for SDB in children without any of the comorbidities described earlier [43]. Provide a baseline PSG for comparison after surgery. Persistent SDB or OSA, despite surgery, is more common in high-risk patients than in otherwise healthy children [43].

38.9 Treatments

38.9.1 Medical Treatment
An acute episode of tonsillitis, with or without a documented GABHS infection, usually has a self-limiting clinical course. Because viral etiologies are so common, supportive care, such as analgesics and hydration, is the basis of treatment for acute tonsillitis; patients rarely require hospitalization. NSAIDs, for example, can help with symptom relief [4].
Antibiotics are frequently used in treating patients at high risk of bacterial phar­yngitis based on Centor or McIsaac criteria and antigen testing or throat culture. Patients with streptococcal pharyngotonsillitis should be treated with an antibiotic in the proper dosage for the duration required to eradicate GABHS from the phar­ynx once diagnosed. Inadequate administration of antibiotic therapy may result in bacterial resistance. Penicillin and amoxicillin are recommended as rst-line antibi­otics for those not allergic to them.
In patients allergic to penicillin, treatment for streptococcal pharyngotonsillitis should include (except for cross-reactions) a rst-generation/second-generation cephalosporin for 10 days (5–6 days for a third generation) clarithromycin for 10 days, or azithromycin for 5 days, erythromycin for 5 days recommended for patients with demonstrated IgE-mediated allergy to beta-lactam. In most cases, treat­ment of the carrier state is not necessary [13, 15, 17, 18, 53]. Most patients, particu­larly adolescents and adults, are symptom-free within 48h of receiving appropriate treatment. Except in patients with risk factors (such as a history of ARF), there is no need to do a pharyngeal swab following antibiotic medication [17]. Antibiotic-treated patients are no longer contagious after at least 24h. It can reduce purulent complica­tions. Immunogenic secondary diseases such as acute rheumatic fever (ARF) or acute post-streptococcal glomerulonephritis (APSGN) are potentially avoided [17]. Increased antibacterial resistance, GI distress, diarrhea, Clostridium difcile infec­tion, and cost are among the risks associated with antibiotic use [17].
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38.9.2 Surgery
Recurrent throat infections and obstructive sleep-disordered breathing (SDB), which can signicantly impact a child’s health and quality of life, are two of the most com­mon reasons for surgery [30]. With the decline of infection as a reason for surgery in children, the prevalence of obstructive sleep-disordered breathing (oSDB) as a pri­mary reason for surgery has risen, particularly in children under three [30, 54, 55]. Although tonsillectomy has advantages, it can also have complications, such as throat pain, postoperative nausea and vomiting, dehydration, delayed nutrition, speech problems (e.g., velopharyngeal incompetence), bleeding, and death [30, 56].
The criteria for surgical management decision-making are outlined by the American Academy of Otolaryngology, Head, and Neck Surgery and updated 2011 guidelines in 2019 for tonsillectomy [30].
1. Clinicians should recommend watchful waiting for recurrent throat infections if
there have been <7 episodes in the past year, <5 episodes per year in the past 2years, or 3 episodes per year in the past 3years.
2. Clinicians may recommend tonsillectomy for recurrent throat infection with a
frequency of at least 7 episodes in the past year, at least 5 episodes per year for 2years, or at least 3 episodes per year for 3 years with documentation in the medical record for each episode of sore throat and >1 of the following: tempera­ture >38.3°C (101°F), cervical adenopathy, tonsillar exudate, or positive test for group A beta-hemolytic streptococcus.
3. Clinicians should evaluate children with recurrent throat infections who do not
fulll the criteria for tonsillectomy, have multiple antibiotic allergies/intoler­ance, PFAPA, or have a history of more than one peritonsillar abscess.
4. Children with obstructive sleep-disordered breathing (SDB), should be referred
for polysomnography (PSG) if they are <2years old or have any of the follow­ing: obesity, Down syndrome, craniofacial abnormalities, neuromuscular prob­lems, sickle cell disease, or mucopolysaccharidoses.
5. Tonsillectomy should be recommended for children who have obstructive sleep
apnea (OSA), as evidenced by overnight polysomnography (PSG).
6. Children undergoing tonsillectomy should not be given or prescribed periopera-
tive antibiotics.
7. For pain relief following tonsillectomy, doctors should prescribe ibuprofen, acet-
aminophen, or both. After tonsillectomy in children under 12, clinicians must not provide or prescribe codeine or any drug-containing codeine.
8. If children <3years old or have severe obstructive sleep apnea (OSA; apnea-
hypopnea index [AHI] >10 obstructive events/hour, oxygen saturation <80%, or both), clinicians should arrange for overnight hospital monitoring after tonsillectomy.
9. Children undergoing tonsillectomy should receive a single intraoperative dose of
intravenous dexamethasone. They reduced postoperative nausea and vomiting (PONV) up to 24h after tonsillectomy, shorter time to rst oral intake, and less
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pain, as evaluated by lower pain scores and longer latency times to painkiller administration.
Chronic tonsillitis, febrile seizures, mufed (“hot potato”) speech, halitosis, mal­occlusion of teeth, tonsillar hypertrophy, cryptic tonsils, and chronic pharyngeal carriage of GABHS are among the poorly validated indications for tonsillectomy that have not been assessed in any controlled trials or case series. When considering tonsillectomy for one of these conditions, there is a signicant role for shared deci­sion-making with caregivers, with individualized decisions considering the severity of the illness and quality of life [30].
38.9.2.1 Tonsillotomy (Partial Tonsillectomy, Intracapsular
Tonsillectomy)
Tonsillotomy is the partial intracapsular removal of tonsil tissue instead of tonsil­lectomy, which is the complete extracapsular removal. Tonsillotomy, partial tonsil­lectomy, tonsil ablation, intra-capsular tonsillectomy, radiofrequency-induced thermotherapy (RFITT) of the tonsils, and subtotal tonsillectomy are some of the terms used in the literature to describe the partial removal of tonsils. Tonsillotomy has been performed with several surgical devices, including CO2-Laser, diathermy, radiofrequency, microdebrider, coblation, bipolar, and cold-steel tonsillectomy. Tonsillotomy is usually done under general anesthesia. However, it can also be done with local anesthesia. Tonsillotomy is mainly used in pediatric obstructive sleep apnoea syndrome (pOSAS) children and is performed under general anesthesia [57].
38.9.2.2 Tonsillectomy
The surgical removal of the palatine tonsils, known as a tonsillectomy, is one of the most common surgical procedures in the head and neck area. Tonsillectomy is a surgical operation that completely removes the tonsil, including its capsule, by dis­secting the peritonsillar space between the tonsil capsule and the muscle wall, with or without adenoidectomy [30].
Tonsillotomy has shown to be as successful as tonsillectomy in treating tonsillar hypertrophy. Conversely, tonsillotomy reduces the risk of subsequent bleeding by 79%, reduces the severity of postoperative pain, and allows earlier return to regular diet and exercise [1, 5761]. After tonsillectomy, postoperative hemorrhages were more common; tonsillotomy may lower the risk of bleeding that necessitates a hos­pital visit (tonsillotomy: 2/1000; tonsillectomy: 14/1000) [57, 58]. Furthermore, the changing trends from tonsillectomy to tonsillotomy reduced the need for and expense of healthcare services. Only 1.5% of patients required resurgery following tonsillotomy [59, 61].
There was no difference in postoperative discomfort and bleeding in the tonsil­lotomy between the microdebrider and the coblator. No substantial infection was observed despite the possibility of tonsillar remaining following tonsillotomy. Regarding sleep disturbance and quality of life, there is no benet to utilizing tonsil­lotomy versus tonsillectomy [60, 61].
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38.9.3 Complications ofTonsil Surgery
One of the most common operations performed by otolaryngologists is tonsillec­tomy. The number of complications associated with tonsillectomy has decreased dramatically due to meticulous surgical techniques and technological advances in modern anesthesiology [1].
38.9.3.1 Intraoperative Complications
Within the rst 24h, primary complications develop intraoperatively or soon after tonsillectomy. Complications from anesthesia are a signicant worry. Intraoperative complications include atlantoaxial subluxation, temporomandibular joint disloca­tion, loose teeth dislodging, accidental extubation, or kinking of the endotracheal tube. To reduce the danger of laryngospasm and aspiration after extubation, secre­tions, or blood in the hypopharynx must be suctioned. One of the most severe com­plications of tonsillectomy is bleeding, which can happen at any time during the perioperative period. Intraoperative bleeding may be related to an underlying coag­ulopathy or possibly to major arterial damage in severe cases. With the use of elec­trocautery, intraoperative bleeding is substantially less common. Detecting underlying coagulation problems through history and physical ndings, as well as preoperative screening in carefully selected individuals, can help avoid severe intra­operative blood loss. Suction cautery or ligation, or even the implantation of a pack in the tonsillar fossa and over-suturing of the tonsillar pillars to give continual com­pression of the fossa, are all options for controlling signicant intraoperative hem­orrhage. Ligating larger arteries through an open-neck exploration may be necessary in severe cases. However, this should be an extremely uncommon step [1, 56].
38.9.3.2 Postoperative Early Complications (<24h)
Most patients have nausea, vomiting, oropharyngeal pain, or referred otalgia in the early postoperatively period. Dehydration can arise due to poorly controlled pain, intractable nausea, and vomiting, which is frequently caused by the use of narcotic painkillers. One of the most severe complications of tonsillectomy is bleeding, which can happen at any time during the perioperative period. Pulmonary edema may occur. After a long-standing upper airway obstruction, the removal of the ton­sils and an increase in intrathoracic pressure can rapidly increase pulmonary hydro­static pressure, resulting in uid transudation into the pulmonary interstitium. Patients with a long history of obstructive sleep apnea, as demonstrated by poly­somnography and cor pulmonale, should be closely monitored with pulse oximetry in a monitored setting following surgery. Patients with prolonged hypercapnia may require planned mechanical breathing after surgery until their Pco2 levels return to normal [1, 56].
38.9.3.3 Postoperative Late Complications (>24h–2weeks)
Pharyngitis can occur in dehydrated patients and necessitates the use of systemic antibiotics. Atelectasis or aspiration of loose teeth, blood, or tissue can cause lung infections. The most common manifestation of postoperative bleeding is delayed
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hemorrhage, which occurs between days 5 and 10 after surgery due to premature eschar separation, which causes retraction of small surface arteries and the cre­ation of an overlaying clot. If the surgeon is unsure whether active bleeding is occurring, the lump should be suctioned to allow for a more thorough examina­tion. Blood clots can hide bleeding veins and, as a result of brinolysis, can inhibit proper coagulation. Patients with a blood clot in the tonsillar fossa and a delayed hemorrhage who are not actively bleeding should be admitted for at least over­night observation. It is necessary to get a coagulation prole and a hematocrit measurement [1, 56].
38.9.3.4 Postoperative Long-Term Complications (>weeks)
Eagle syndrome (ossication of the stylohyoid ligament) is a rare condition with a poorly known pathophysiologic basis for its symptoms. Patients with face pain or dysphagia may present months or years following tonsillectomy [56].
38.9.4 Immunological Effects ofTonsil Surgery
Due to the limited availability of sequential studies, these have yet to be thoroughly investigated, the fact that any immunological deciency could have existed prior to surgery should be taken into consideration. However, there is evidence of a reduc­tion in the number of activated B cells and a decrease in secretory IgA and other immunoglobulins, but only to the lower end of the normal range [1, 11]. The num­ber of lymphocytes in children’s tonsils is higher than in adults’ tonsils, and the number of helper and cytotoxic T lymphocytes is higher in sick tonsils. Also, the persistent antigenic stimulation from infected tonsils causes increased levels of immunoglobulins throughout the pretonsillectomy interval. It was found that fol­lowing tonsillectomy, the immune response was decreased and that the greater lev­els of immunoglobulin in the preoperative period were related to bacterial activation of lymphocytes [62].
Tonsillar lymphocytes can become so overstimulated by antigenic stimulation that they lose their ability to respond to other antigens. When this immunologic impairment develops, the tonsil can no longer provide adequate local protection or reinforce the upper respiratory tract’s secretory immune system. As a result, remov­ing recurrently sick tonsils has a therapeutic benet [30]. Some studies, however, found minimal changes in Ig concentrations in the serum and surrounding tissues after tonsillectomy. Nonetheless, no research has shown that tonsillectomy has a signicant clinical inuence on the immune system [30].
After tonsillectomy and adenoidectomy, children who had previously been immunized orally with live poliovirus vaccine saw their titers decline three- to four­fold. Attempts to vaccinate seronegative children who had tonsillectomy and ade­noidectomy resulted in delayed and reduced nasopharyngeal secretory immune responses, as evaluated by poliovirus IgA antibodies [1, 11].