Streptococcal pharyngitis in patients without tonsils
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Streptococcal Pharyngitis Without Tonsils: Clinical Features and Diagnosis
Streptococcal pharyngitis, commonly known as strep throat, is typically associated with symptoms such as sore throat, fever, and tonsillar exudates. However, patients who have had their tonsils removed (tonsillectomy) can still develop streptococcal pharyngitis, as the infection affects the pharyngeal mucosa, not just the tonsils themselves 3510. The diagnosis in these patients relies on the same clinical features—sore throat, fever, and tender anterior cervical lymph nodes—even in the absence of tonsillar tissue 3510.
Role of Tonsils in Streptococcal Pharyngitis
The tonsils are a common site for group A streptococcus (GAS) colonization and infection, and their removal can reduce the frequency of recurrent streptococcal pharyngitis. Studies show that adults with recurrent strep throat who undergo tonsillectomy experience significantly fewer episodes of streptococcal and other throat infections compared to those who retain their tonsils . However, the risk is not eliminated entirely, indicating that the pharyngeal tissue alone can still harbor the infection 135.
Diagnosis in Patients Without Tonsils
For patients without tonsils, the diagnosis of streptococcal pharyngitis is based on symptoms such as sore throat, fever, and the absence of cough, as well as physical findings like pharyngeal erythema or exudate on the posterior pharyngeal wall 3510. Throat swabs for rapid antigen detection or culture should be taken from the posterior pharynx, as the tonsillar area is no longer present 35710. The absence of tonsils may make some classic signs, like tonsillar exudate, less apparent, but other features remain useful for diagnosis 3510.
Prevalence and Risk Factors
Streptococcal pharyngitis is most common in children aged 5 to 15, but adults can also be affected 3567. The presence of inflamed tonsils and tonsillar exudate are strong predictors in patients with tonsils, but in those without, clinicians rely more on general pharyngeal inflammation and other symptoms 356. Even after tonsillectomy, patients can still experience pharyngitis caused by GAS, though the frequency is reduced .
Treatment Considerations
Treatment for streptococcal pharyngitis in patients without tonsils is the same as for those with tonsils. Penicillin or amoxicillin remains the first-line therapy, with alternatives for those with allergies 35610. Antibiotic therapy is important to reduce symptoms, prevent complications, and limit transmission 35710.
Conclusion
Patients without tonsils can still develop streptococcal pharyngitis, though the risk is lower compared to those with tonsils. Diagnosis relies on clinical features and laboratory testing of the posterior pharynx. Tonsillectomy reduces, but does not eliminate, the risk of recurrent strep throat. Treatment protocols remain the same regardless of tonsil status, emphasizing the importance of accurate diagnosis and appropriate antibiotic use.
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