Abstract
Practical considerations in the selection and administration of microwave and RF induced hyperthermia in the treatment of various tumors are discussed. A thorough knowledge of the thermal properties of the tumor and its environment is required for the establishment of an effective therapeutic regimen. Examples of clinical observations illustrate the patients’ general tolerance to the therapy and highlight the problems presented by some special cases. Possible ways of avoiding adverse effects during localized microwave induced heating of superficial tumors and RF heating of deep seated tumors are described.