Fig. 2From: A rare case of coexistence of metastasis from head and neck squamous cell carcinoma and tuberculosis within a neck lymph nodeRepresentative micrograph of the fused lymph nodes: H/E staining showing the granulomatous reaction, with palisading epithelioid histiocytes, and metastatic deposit (a); tumor nests are intensely positive to CK pan immunostaining (b); CD68 immunostaining confirms the presence of epithelioid histiocytes (c). (a, b, c magnification 100×)Back to article page