The case of a 68-year-old female patient, without comorbidities, with a diagnosis of a large parapharyngeal abscess on the left, was reported by a neck CT scan, which evolved with spontaneous drainage and complete resolution of the peritonsillar bulging, completing the therapeutic plan with antibiotic therapy, without abscess recurrence. Clinical suspicion, associated with neck CT, is an indispensable item in the design of early treatment, in order to avoid complications.