Electron-microscope observations on the tonsillar epithelium in children with recurrent tonsillitis

Area of Science:

• Pathology
• Pediatric Medicine
• Microscopy

Background:

• Recurrent tonsillitis is a common pediatric condition.
• The pathogenesis of recurrent tonsillitis is not fully understood.
• Tonsillar epithelium plays a role in immune responses.

Purpose of the Study:

• To investigate the ultrastructural changes in the tonsillar epithelium of children with recurrent tonsillitis.
• To evaluate the M-cells and squamous stratified epithelium in affected tonsils.
• To assess the relationship between epithelial changes and the hypothesis on metaplastic changes in tonsillitis pathogenesis.

Main Methods:

• Examination of twenty tonsils from children aged 3-6 years undergoing tonsillectomy for recurrent tonsillitis.
• Electron microscopy was used to analyze the epithelial layer of the tonsils.
• Histopathological assessment of epithelial characteristics and cellular activity.

Main Results:

• A decrease in the number and tubulo-vesicular system of M-cells was observed.
• Predominance of squamous stratified epithelium, with some areas of keratinization.
• Reduced presence of active lymphocytes and vascular activity within the tonsillar parenchyma, primarily near M-cells.

Conclusions:

• The findings support Surjan Jr.'s 1980 hypothesis.
• Metaplastic changes in the tonsillar epithelium are implicated in the pathogenesis of recurrent tonsillitis.
• Ultrastructural alterations in M-cells and keratinization are key features in affected tonsils.