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Cancer is often characterized as a chaotic, poorly regulated growth. Cancer can be viewed as a complex adaptive system. Complex adaptive systems can be described mathematically by nonlinear (chaos) theory including asymmetry, fractal structure and autocorrelation factor (Cramer, 1993). Atypical shape of tumor cells and chaotic structures of blood flow is one from characteristic of cancer process. Atypical change of cell shape in conglomerates of tumor cells and structure of blood flow is accompanied by increase of deterministic chaos (Baish & Jain, 2000; Orel & Dzyatkovskaya, 2000). Complex natural phenomena such as cancer are dynamical systems whose state changes by perturbation. The concept of deterministic chaos is hierarchical for host in contemporary ideas about role of chaos for potential application in oncology (Sedivy & Mader, 1997; Blazsek, 1992). The authors introduced concepts related to chaos theory, such as attractors, fractals and the LotkaVolterra equations, as potentially useful approaches to allow for the analysis of carcinogenic biological processes as related to selection and competition. In certain situations, these equations give chaotic, non-linear, and nonpredictable results. Given what is known about the enormous complexity of the carcinogenic process, use of models such as these may be perfectly justified, and might provide the theoretical framework that is so desperately needed in this age of data overload to make real progress in the understanding of human carcinogenesis (Garte, 2003). Entropy is a measure of disorder. The thermodynamic entropy of a cancerous cell is different from that of a normal cell due to the more disordered structure of the cancerous cell. The reversal of entropy flow in tumour tissues may halt tumour development due to reversed signal transmission in the tumour-host entity. This thermodynamic approach may help in the design of cancer therapy (Molnar et al., 2009). Transplanted animal tumors which can only be experimentally induced by transplanting living tumor cells significant influence on complex adaptive systems include developing of tumor formation for experimental animals. During recent years there has been increasing public concern on potential cancer risks from radiofrequency radiation emissions (Hardell &

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The Effect of Spatially Inhomogeneous Electromagnetic Field and Local Inductive Hyperthermia on Nonlinear Dynamics of the Growth for Transplanted Animal Tumors