Reactive lymph node hyperplasia
Chapter: 20b
Benign proliferation of lymphoid tissue. Histologically, the pattern may be follicular, interfollicular, sinusoidal or mixed. A wide variety of etiologies exist, including infection, drugs and systemic disease. Clinicopathologic correlation is usually required to determine the etiology, as the histologic findings alone are usually nonspecific. Some patterns are so characteristic that they suggest a specific underlying disease category, such as in dermatopathic lymphadenopathy, cat scratch disease, toxoplasmosis, and viral etiologies.
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