“…The underlying molecular mechanisms of spontaneous remission are still unknown. The activation of cytotoxic T lymphocytes and macrophages, in conjunction with an increased cytotoxicity of natural killer cells [38] as well as cytokines of the immune system, such as tumour necrosis factor [39,40], interferon gamma and interleukin-2, released during infection, may play a role in the occurrence of spontaneous remission [41,42]. However, no clear link between spontaneous remission and infection or immune response was reported in at least one case [43].…”