A study was undertaken to help us reach a better understanding of the tumor-infiltrating pattern of lymphoid cells and in particular of monocyte-derived cells, namely the CD68+, acid-phosphatase-expressing scavenger macrophages and the MHC-class-II- and S100-antigen-presenting dendritic cells in head and neck squamous-cell carcinoma. In the stroma of the tumors distinctive small fields of lymphocytes were found, the T cell areas of these fields being intermingled with dendritic cells. Intra-epithelial dendritic cell infiltration was low. The infiltrative pattern of macrophages was similar to patterns described in earlier studies with substantial stromal invasion and inconsistent intra-epithelial invasion, but small granuloma-like structures of CD68+ macrophage-like cells, found in the stroma of tumors, have not been reported before. The histochemical localization of the tumor-infiltrated dendritic cells and macrophages supports the view that the former cells are involved in the sensitization to tumor antigens, whereas the latter cells are involved in tumor cytotoxicity/scavenging of tumor cell debris. Although it has been shown in the past that transmembranal (TM) factors (p15E-like factors) present in the serum and tumor of patients with cancer of the head and neck have suppressive effects on monocyte/macrophage/dendritic cell function, a relationship between the intensity of epithelial staining for TM factors and the infiltrative pattern of monocytes/macrophages/dendritic cells could not be demonstrated.

Dendritic cells, Head and neck cancer, Macrophages, Squamous-cell carcinoma
dx.doi.org/10.1007/BF01517167, hdl.handle.net/1765/64363
Cancer Immunology, Immunotherapy: other biological response modifications
Immunology

Kerrebijn, J.D.F, Balm, A.J.M, Knegt, P.P, Meeuwis, C.A, & Drexhage, H.A. (1994). Macrophage and dendritic cell infiltration in head and neck squamous-cell carcinoma; an immunohistochemical study. Cancer Immunology, Immunotherapy: other biological response modifications, 38(1), 31–37. doi:10.1007/BF01517167