Immune derangement in patients with malignant melanoma

The interaction between immune system and growing tumor can be expressed differently at different stages of the disease. This presentation covers three facets of these reactions in melanoma patients. A. The Primary Tumor. Time-lapse cinematography, with an analysis of lymphocyte movement demonstrated positive and negative chemotaxis against tumor tissues which correlated with their histological presence or absence within the primary tumor. B. The Regional Lymph Nodes. Histological examination of regional lymph nodes showed an increase in germinal center activity and B cell number, with a decrease in sinus histiocytosis and monocyte count as the tumor progressively invaded the node. This correlated with the elution studies, wherein the antimembrane antibody decreased and the anti-cytoplasmic antibody increased during the same period of progression. C. Humoral Immunity and Metastasis. Clinical metastasis heralded the decrease of anti-membrane antibodies with a rise in anti-immunoglobulins, especially anti-idiotypic antibodies and immune complexes containing tumor-directed antibody and either antigen or anti-immunoglobulin. This triad of anti-immunoglobulin, immune complexes and anergy as seen in other diseases with persistent antigenic stimulation, results in abnormal regulation and derangement.