Fine needle aspiration in chronic tonsillitis: reliable and valid diagnostic test

Area of Science:

• Otolaryngology
• Microbiology
• Diagnostic Medicine

Background:

• Chronic tonsillitis management often relies on empirical antibiotic therapy.
• Accurate identification of tonsillar microflora is crucial for targeted treatment.
• Fine needle aspiration (FNA) has not been widely adopted for tonsil microflora evaluation.

Purpose of the Study:

• To evaluate the reliability and validity of tonsil core fine needle aspiration (FNA) for diagnosing chronic tonsillitis.
• To compare FNA culture results with the gold standard of dissected tonsil core culture.
• To assess the feasibility of FNA as an outpatient procedure.

Main Methods:

• A prospective study involving 30 patients with chronic tonsillitis undergoing tonsillectomy.
• Tonsil core samples were obtained using FNA under local or general anesthesia.
• FNA cultures were compared against cultures from dissected tonsil cores.

Main Results:

• Sensitivity of FNA culture was 100% under general anesthesia and 93% under local anesthesia.
• Positive predictive value of FNA culture was 92% (general) and 82% (local) compared to core culture.
• FNA of the tonsil core demonstrated high reliability and validity.

Conclusions:

• Fine needle aspiration of the tonsil core is a reliable and valid diagnostic tool for chronic tonsillitis.
• The procedure can be safely performed as an outpatient procedure under local anesthesia.
• Identifying specific bacterial pathogens via FNA can guide appropriate antibiotic therapy, potentially transforming chronic tonsillitis management.