Usually non-Hodgkin's lymphoma: Large nodes, enlargement of Waldeyer's ring, extra lymphatic enlargement of particular glands such as the thyroid.

Hodgkin's lymphoma may be present (25 percent of head & neck lymphoma) particularly if there is also a mediastinal involvement.

Lymphomas can cross fascial planes easily.

Can undergo rapid enlargement.

Differential diagnosis: squamous cell cancer, infectious mononucleosis.

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