Lymph node shows preserved normal nodal pattern and hyperplasia of the lymphoid follicles which retain active and intact germinal centers with tingible body macrophages. Sinuses are expanded by numerous benign histiocytes consistent with sinus histiocytosis and anthracosis. There is associated inflammatory cell infiltrate in subcapsular areas of lymph node with extension into perinodal fibrofatty tissue. No evidence of specific granulomas.No evidence of malignancy.
Phlegmonous and obstructive appendicitis associated with regional lymphadenopathy.
Lymph node measured 1.5x1x0.7 cm, totally embedded.
Lymph node, excision biopsy: