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Colonization of maxillary, ethmoidal sinuses and nasopharynx in chronic sinusitis.

The aim of this study was the determination of bacteria present in maxillary and ethmoid cavities in patients with chronic sinusitis, and to correlate these findings with bacteria simultaneously present in their nasopharynx. The purpose of this study was to establish the role of bacteria found in chronically inflamed sinuses and to evaluate if present bacteria colonized or infected sinus mucosa. Nasopharyngeal and sinus swabs of 65 patients that underwent functional endoscopic sinus surgery were cultivated and at he same time the presence of leukocytes were determined in each swab. The most frequently found bacteria in nasopharynx were Staphylococcus aureus, Staphylococcus epidermis, Streptococcus spp, Streptococcus viridans and Streptococcus pneumoniae. Maxillary of ethmoidal sinus swabs yielded bacterial growth in 47 (72, 31%)patients. The most frequently found bacteria in sinuses were Staphylococcus epidermis, Staphylococcus aureus, Klebsiella spp. and Streptococci (pneumoiae, viridans and spp.). The insignificant number of leukocytes was present in each sinus swab. From this study we can conclude that chronic sinusitis should be considered as chronic inflammatory condition rather than bacterial infection.

Chronic sinusitis ; nasopharynx

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