Differential Diagnosis

A. Cervical Lymphadenopathy. Any viral or bacterial infection in the head and neck may be associated with reactive cervical adenopathy that is often bilateral.

B. Acute Cervical Lymphadenitis With or Without Abscess. Typically unilateral; seen in any age group but more commonly in children aged 1-4 years. Group A ^-hemolytic streptococcus and Staphylococcus aureus account for 80% of cases. Probably occurs as a result of bacteria from oropharynx and upper respiratory tract seeding the draining lymph nodes. Viral cervical adenitis is usually self-limited and bilateral. Unilateral, solitary cervical node enlargement may be present in 50-70% of patients with Kawasaki disease.

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