An immunological mechanism has been suggested for some of the case reports of the spontaneous remission and regression of cancer after an acute infection . The basic suggestion made is that two or more acute inflammatory responses are occurring at about the same time in these cancer patients. Furthermore, it is suggested that two or more acute inflammatory responses occurring at about the same time may negate the inhibitory effect of systemic inflammation on innate immunity. It is suggested that the activation of innate immunity cells (NK cells, Dendritic cells, etc.) in these cancer patients results in the spontaneous remission of cancer.