Methods
All necessary approvals obtained and all participants’ data handled according to University Hospital of Larissa scientific committee’s regulations, Helsinki and HIPAA regulations.
A retrospective study of 743 consecutive DNIs treated over the period January 2011-December 2019 was conducted. STROBE guideline has been followed. Diagnosis was suspected by clinical history and findings and confirmed by imaging. Data of patients with abscess contained only for PMS, including demographics, clinical information, bacteriology and treatment were exported and analyzed. PMA cases with pus extension to peritonsillar or any other neck space were excluded. Means are reported with SDs. Χ2 test was used for comparisons; p<0.05 was considered significant. Data analysis was performed with SPSS 20 software (IBM, Chicago, IL, USA).