Cervical lymphadenopathy

DDx

• Upper respiratory tract infection
• Bacterial infection of upper extremities
• Metastasis from squamous cell carcinoma in mouth, pharynx, larynx, upper esophagus
• Lymphoma
• Tuberculous lymphadenitis (scrofula)
• Cat-scratch disease
• Sarcoidosis
• Lyme disease
• Toxoplasmosis
• Autoimmune adenopathy
• Kikuchi's disease (histiocytic necrotizing lymphadenitis)
• Tularemia
• Actinomycosis (cervicofacial)
• Drug-induced pseudolymphoma (classically phenytoin)