CTICasesLyme disease presenting as axillary lymphadenitis
Imaging findings
CT scan shows necrotic-appearing, enlarged axillary lymph nodes in a patient presenting with arm swelling and a spider bite. Serology confirmed Lyme disease.
Key takeaways
Lyme disease (Borrelia burgdorferi) can present with localized, necrotic lymphadenitis near the site of the tick bite, mimicking cellulitis or cat scratch disease. Axillary lymphadenopathy is a recognized manifestation.
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