[Computed tomography image analysis of peritonsillar abscess].

Area of Science:

• Otolaryngology
• Head and Neck Surgery
• Infectious Diseases

Background:

• Peritonsillar abscess (PTA) is a common head and neck infection.
• Standard treatments include puncture, incision, or abscess tonsillectomy.

Purpose of the Study:

• To classify peritonsillar abscesses using CT findings.
• To compare CT classifications with clinical characteristics.
• To discuss the indications for abscess tonsillectomy.

Main Methods:

• Retrospective study of 145 patients diagnosed with PTA via CT.
• Exclusion of patients who received prior surgical treatment.
• Classification of PTA based on abscess shape (Oval, Cap) and location (superior, inferior).

Main Results:

• PTA classified into four CT categories: superior Oval, superior Cap, inferior Oval, and inferior Cap types.
• Superior Oval type was the most frequent, followed by superior Cap, inferior Cap, and inferior Oval.
• Inferior Cap type PTAs were associated with higher rates of laryngeal edema and airway obstruction.
• Cap type abscesses showed more muscular tissue involvement than Oval types, suggesting more severe inflammation.

Conclusions:

• CT classification of PTA provides valuable clinical insights.
• Inferior Cap type PTAs require more intensive treatment, such as abscess tonsillectomy, due to increased complication risks.