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Neck masses and lymphadenopathy represent common yet clinically significant presentations in head and neck practice. A neck mass may arise from inflammatory, congenital, or neoplastic causes and can involve lymph nodes, salivary glands, thyroid tissue, or soft tissues of the cervical region. Lymphadenopathy refers specifically to enlargement of lymph nodes and is frequently associated with infections of the upper aerodigestive tract, dental infections, or systemic inflammatory conditions. In many cases, these enlargements are reactive and resolve with appropriate medical management.

Persistent or progressive neck masses, particularly in adults, warrant careful evaluation to exclude malignancy. Metastatic lymph node involvement is often the earliest sign of head and neck cancers, while primary lymphoid malignancies such as lymphoma may also present as painless, firm lymph node enlargement. Congenital conditions, including branchial cleft cysts and thyroglossal duct cysts, typically present as well-defined neck swellings in younger individuals.

A systematic diagnostic approach is essential and includes detailed clinical history, physical examination, imaging studies, and fine-needle aspiration cytology. Management depends on the underlying etiology and may range from antibiotics and observation to surgical excision or oncologic treatment. Early diagnosis ensures prompt intervention, reduces morbidity, and improves overall prognosis.