Cervical Lymphadenopathy Diagnosis and Management

Key Characteristics and Etiologies

Lymph node enlargement may be unilateral or bilateral, with unilateral presentation being more common in certain conditions (95% of cases in some infections), according to the American Thoracic Society 1
Mycobacterial infections (both tuberculosis and non-tuberculosis mycobacteria) are important causes of cervical LAD, especially in specific age groups, as noted by the American College of Chest Physicians 1
In children aged 1-5 years, non-tuberculous mycobacterial (NTM) infections are common, as reported by the American Thoracic Society 1
In adults, over 90% of mycobacterial cervical adenitis is caused by M. tuberculosis, according to the American College of Physicians 2
Autoimmune conditions like Kawasaki disease can present with cervical LAD, typically unilateral and ≥1.5 cm in diameter, as described by the American Heart Association 3
Rosai-Dorfman-Destombes disease presents with massive, painless, bilateral cervical lymphadenopathy, as noted by the American Society of Hematology 6
Autoimmune lymphoproliferative syndrome (ALPS) features persistent lymphadenopathy affecting multiple nodal chains including cervical nodes, as reported by the American Society of Hematology 7

Initial evaluation should include a thorough history and physical examination to identify associated symptoms and risk factors, as recommended by the American College of Physicians 2
Diagnostic testing may include a tuberculin skin test (PPD) for suspected mycobacterial adenitis, as suggested by the American Thoracic Society 2
Excisional biopsy has a reported diagnostic yield of over 95% and should be considered when necessary for definitive diagnosis, according to the American College of Surgeons 2
In HIV-infected patients starting antiretroviral therapy, cervical lymphadenopathy may represent immune reconstitution syndrome, as noted by the American Thoracic Society 1